CN101079516B - Antenna device - Google Patents
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- CN101079516B CN101079516B CN 200610138982 CN200610138982A CN101079516B CN 101079516 B CN101079516 B CN 101079516B CN 200610138982 CN200610138982 CN 200610138982 CN 200610138982 A CN200610138982 A CN 200610138982A CN 101079516 B CN101079516 B CN 101079516B
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Abstract
The present invention provides a antenna device, including: GPS antenna element (2) for receiving GPS signal from artificial satellite; signal receiving circuit part (3) to amplify the GPS signal received by GPS antenna element (2) and output the signal through coaxial cable; circuit substrate (1) for installing GPS antenna element (2) and signal receiving circuit part (3). In the circuit substrate (1), a electric surge absorption element (4) with a couple of lead wire terminals (4a, 4b) connects with output end of signal receiving circuit part (3) through one of lead wire terminal (4a), the other lead wire terminal (4b) connects with the grounding point of circuit substrate (1). Setting metal shielding case (5) on one surface of circuit substrate (1) on which surface installing GPS antenna element (2), the metal shielding case (5) covers with one lead wire terminal (4a) of the electric surge absorption element (4) locating on the above mentioned surface.
Description
Technical field
The present invention relates to a kind of antenna assembly, relate in particular to from artificial satellite and receive GPS (GlobalPositioning System: the global positioning system) antenna assembly of usefulness signal.
Background technology
In recent years, the GPS equipment of GPS occurred utilizing, this GPS receives the electric wave signal that contains this satellite orbit and data constantly etc. from artificial satellite, and positions according to the tellurian position of the time difference that receives signal wave to signal reception place.This GPS equipment is widely used in the position finding of the mobile objects such as the movable fixtures such as mobile phone and automobile.
In this GPS equipment, use the antenna assembly that receives from the electric wave of artificial satellite.As this antenna assembly, proposition has circuit substrate is accommodated in structure in the housing, described circuit substrate is equipped with that the GPS that receives artificial satellite amplifies with signal with the gps antenna element of signal with the GPS that the gps antenna element receives and to the signal receiving circuit section (for example, with reference to TOHKEMY 2000-101334 communique (Fig. 1), TOHKEMY 2001-332920 communique (Fig. 7)) of coaxial cable output.
Yet above-mentioned GPS not only is confined to the position finding of above-mentioned movable fixture and mobile object with the purposes of antenna assembly.
For example, as shown in figure 11, antenna assembly 100 is installed in pillar 200 tops that outdoor assigned position place arranges, and by coaxial cable 400 antenna assembly 100 is connected with relay station (base station) 300, by the GPS that obtains from antenna assembly 100 via coaxial cable 400 taking-up moment signal the signal, also play the relay station effect of 300 self-operating times of proofreading and correct voluntarily (namely obtaining the purposes of the moment data of relay station synchronous usefulness 300 running time).In addition, can also carry out position finding with signal to assigned position by the GPS that utilizes antenna assembly 100 to receive, measure the change in location of environment around the landform etc., forecast earthquake etc. with the basis that is changed to of this position.
But, as shown in figure 11, when under the state that antenna assembly 100 is arranged at outdoor assigned position, using, in order to receive from the gps signal of artificial satellite and use pillar 200 grades that antenna assembly 100 is located at higher position.Therefore, antenna assembly 100 causes thunderbolt easily.For this reason, in the prior art, avoid producing because of described thunderbolt the infringement of super-high-current in order to protect antenna assembly 100 and relay station 300, in coaxial cable 400, be provided with the anti lightning surge equipment 500 such as anti lightning cable of lightning rod or distant place ground connection.
Yet above-mentioned anti lightning surge equipment 500 has the problem that the space is set that construction operation is time-consuming, cost is high and need be very large, therefore has the requirement of as far as possible avoiding such setting.
Therefore, proposing has following scheme, shown in Figure 12 A, Figure 12 B, is equipped with below on the circuit substrate 101 of signal receiving circuit section 103 when gps antenna element 102 is installed in the above, and the surge absorber 104 that the thunder and lightning surge is used is set.
Like this, when the circuit substrate 101 of antenna assembly 100 is provided with surge absorber 104, because gushing electrical property, improves the anti-thunder and lightning of antenna assembly 100, so can reduce the quantity of anti lightning surge equipment 500.
Yet, surge absorber 104 is arranged in the situation on the antenna assembly 100, can produce following such new problem.
Namely, surge absorber 104 is because use lead terminal 104a, 104b to be installed on the circuit substrate 101, so at lead terminal 104a, 104b (that lead terminal 104a that especially is connected with the output of signal receiving circuit section 103) are positioned at when (face of gps antenna element 102 namely being installed) above the circuit substrate 101, owing to lead terminal 104a current flowing produces magnetic field, can make gps antenna element 102 receive the radiated interference that this magnetic field etc. causes.If gps antenna element 102 receives the radiated interference signal, during then the radiated interference signal is added to the signal of telecommunication of gps antenna element 102 output, make electric signal waveform disorderly, thus so that GPS with the demodulation difficult of signal.
As mentioned above, in existing antenna assembly 100, when the surge absorber 104 as anti lightning surge countermeasure is installed, in the signal of telecommunication of gps antenna element 102 outputs, can sneak into the radiated interference signal because surge absorber 104 is set in circuit substrate 101.
Summary of the invention
The present invention researches and develops in order to solve the problems of the technologies described above, and its purpose is to provide a kind of antenna assembly, the radiated interference signal is not sneaked in the output of gps antenna element can improve anti-thunder and lightning surge performance.
In order to solve the problems of the technologies described above, antenna assembly of the present invention comprises: the gps antenna element; The signal receiving circuit section that the GPS that above-mentioned gps antenna element is received amplifies and exports with signal; The surge absorber that output is connected, another lead terminal is connected with earth point with pair of lead wires terminal and one of them lead terminal and above-mentioned signal receiving circuit section; The circuit substrate of above-mentioned gps antenna element, above-mentioned signal receiving circuit section and above-mentioned surge absorber is installed, wherein, one side at the above-mentioned gps antenna element of the installation of foregoing circuit substrate is provided with metal radome, and this radome covers an above-mentioned lead terminal of the above-mentioned surge absorber of the above-mentioned one side side that is positioned at the foregoing circuit substrate at least.
Antenna assembly of the present invention is because have surge absorber, so can improve anti-thunder and lightning surge performance.And, because metal radome covers one of them lead terminal of the surge absorber of the one side side that is positioned at the circuit substrate that the gps antenna element is installed at least, so adopt radome capable of blocking owing to the above-mentioned lead terminal radiated interference that magnetic field that electric current produces etc. causes of flowing through is transmitted to the gps antenna element.Therefore, can suppress to sneak in the signal of telecommunication of gps antenna element output because the radiated interference signal that surge absorber causes is set, thereby can carry out fully GPS with the demodulation of signal.
Preferably, the foregoing circuit substrate has the through hole of each lead terminal that inserts respectively above-mentioned surge absorber, above-mentioned surge absorber is installed on the another side (opposing face of the face of gps antenna element 102 namely is installed) of circuit substrate, each lead terminal inserts described through hole from the another side side of foregoing circuit substrate, makes the front end of each lead terminal be positioned at the above-mentioned one side side of foregoing circuit substrate.
At this moment, only each lead terminal front end of surge absorber is positioned at the one side side of the installation gps antenna element of circuit substrate.Therefore, be positioned at above-mentioned one side side situation with the matrix of surge absorber and compare, can reduce radiated interference.
Preferably, above-mentioned gps antenna element be installed on depart from foregoing circuit substrate center position the position (namely, position from center deflection end), above-mentioned surge absorber be installed on from foregoing circuit substrate center position to the position of above-mentioned gps antenna element opposition side skew.
At this moment, it is far away that surge absorber and gps antenna element distances become, so can reduce the impact on the radiated interference of gps antenna element that produces because of surge absorber.
Preferably, this antenna assembly also comprises: the matrix that carries the foregoing circuit substrate in the one side side; Has the rib for fixing above-mentioned radome, at the radome that is installed under the state by the fixing above-mentioned radome of above-mentioned rib on the above-mentioned matrix one side side; When above-mentioned radome is installed on the above-mentioned matrix, will be fixed in the earthing mechanism that the above-mentioned radome on the above-mentioned rib is connected with the earth point (ground) of foregoing circuit substrate.
At this moment, by being covered on the matrix by the radome of above-mentioned rib fixed mask cover, radome can be located at the one side side of circuit substrate, need not adopt welding to wait radome is fixed on the circuit substrate, it is easy that assembling operation becomes.And, when radome is pulled down from matrix, then get off because radome is also split from the circuit substrate simultaneously, so only need radome is disassembled from matrix, namely can confirm simply the connection status (such as weld crack, welding omission etc.) of surge absorber and circuit substrate or surge absorber oneself state etc.
Preferably, above-mentioned earthing mechanism comprises: the screw thread through hole, it is located in above-mentioned matrix and the above-mentioned radome any, make above-mentioned matrix and above-mentioned radome in conjunction with the time attachment screw that adopts connect; Screwed hole, it is located on another of above-mentioned matrix and above-mentioned radome, screws up with the above-mentioned attachment screw that connects above-mentioned screw thread through hole; The 1st ground strip, it has the 1st hole of being located on the foregoing circuit substrate and connecting above-mentioned attachment screw, is electrically connected with foregoing circuit substrate earth point (ground); The 2nd ground strip, it has the 2nd hole of being located on the above-mentioned radome and connecting above-mentioned attachment screw, when above-mentioned matrix when above-mentioned radome is combined, overlapping with the 1st ground strip under the state consistent with above-mentioned the 1st hole of above-mentioned the 2nd hole; By above-mentioned attachment screw is screwed up via above-mentioned the 1st hole and above-mentioned the 2nd hole and above-mentioned screwed hole from above-mentioned screw thread through hole, above-mentioned matrix and above-mentioned radome are mutually combined.
At this moment, by adopting quite simple, the syndeton that is used for radome and matrix combination in the past, can realize above-mentioned earthing mechanism, and can reduce cost.
Description of drawings
Figure 1A is the schematic perspective view of the antenna assembly major part of embodiments of the present invention 1;
Figure 1B is the side schematic view of major part of the antenna assembly of execution mode 1;
Fig. 2 is the block diagram of the circuit structure of the antenna assembly of expression execution mode 1;
Fig. 3 is the exploded perspective view of the antenna assembly of execution mode 1;
Fig. 4 A is the side schematic view of major part of the antenna assembly variation of execution mode 1;
Fig. 4 B is the side schematic view of major part of the antenna assembly variation of execution mode 1;
Fig. 4 C is the side schematic view of major part of the antenna assembly variation of execution mode 1;
Fig. 5 A is the schematic perspective view of the antenna assembly major part of embodiments of the present invention 2;
Fig. 5 B is the side schematic view of major part of the antenna assembly of execution mode 2;
Fig. 6 A is the side schematic view of major part of the antenna assembly variation of execution mode 2;
Fig. 6 B is the side schematic view of major part of the antenna assembly variation of execution mode 2;
Fig. 6 C is the side schematic view of major part of the antenna assembly variation of execution mode 2;
Fig. 7 A is the schematic perspective view of the antenna assembly major part of embodiments of the present invention 3;
Fig. 7 B is the side schematic view of major part of the antenna assembly of execution mode 3;
Fig. 8 A is the side schematic view of major part of the antenna assembly variation of execution mode 3;
Fig. 8 B is the side schematic view of major part of the antenna assembly variation of execution mode 3;
Fig. 8 C is the side schematic view of major part of the antenna assembly variation of execution mode 3;
Fig. 9 A is the schematic diagram of the antenna assembly circuit substrate of embodiments of the present invention 4;
Fig. 9 B is the ground plan of radome of the antenna assembly of execution mode 4;
Fig. 9 C is the ground plan of the radome of execution mode 4;
Figure 10 is the exploded perspective view of the antenna assembly of execution mode 4;
Figure 11 uses the key diagram of state for the existing antenna assembly of expression;
Figure 12 A is the floor map of existing antenna assembly major part;
Figure 12 B is the side schematic view of existing antenna assembly major part.
Embodiment
Such as Figure 1A, Figure 1B, Fig. 2, shown in Figure 3, the antenna assembly of present embodiment comprises: receive the gps antenna element 2 that GPS uses signal from artificial satellite (not shown); The GPS that gps antenna element 2 is received with signal amplify, and with this GPS with signal to signal receiving circuit section 3 that the coaxial cable (coaxial cable for high frequency) that is used for being sent to relay station (not shown) is exported; The circuit substrate 1 of gps antenna element 2 and signal receiving circuit section 3 is installed; Take in the housing 6 of circuit substrate 1.In addition, in the one side of the installation gps antenna element 2 of circuit substrate 1 (be among Figure 1A above) surge absorber 4 is installed.Surge absorber 4 has pair of lead wires terminal 4a, 4b, and one of them lead terminal 4a is connected with the output of signal receiving circuit section 3, and another lead terminal 4b is connected with the earth point (ground) of circuit substrate 1.In addition, be provided with the metal radome 5 of a lead terminal 4a who covers surge absorber 4 in the above-mentioned one side of circuit substrate 1.
Signal receiving circuit section 3 amplifies the GPS that is received by gps antenna element 2 as mentioned above and exports with coaxial cable to transmitting with signal.When GPS is sent to relay station (not shown) with signal from antenna assembly, by signal receiving circuit section 3, can prevent GPS make with signal attenuation GPS with signal can not demodulation problem.Signal receiving circuit section 3 consists of by the various electronic device groups such as resistance or electric capacity are installed on the circuit substrate 1.Particularly, as shown in Figure 2, signal receiving circuit section 3 alternately is connected in series by 3 amplifier 30a～30c, 3 band pass filter 31a～31c and consists of.Any one is the device that the signal of telecommunication is amplified the gain that obtains stipulating for amplifier 30a～30c.Band pass filter 31a～31c consists of 3 grades of band pass filters, constitutes any one and only sees through the signal with the frequency band centered by the frequency (about 1575.42MHz) of signal by GPS.Therefore, signal receiving circuit section 3 only is amplified to its gain with the signal of telecommunication in the frequency band territory centered by 1575.42MHz in the signal of telecommunication of gps antenna element 2 outputs becomes setting, and with the signal of telecommunication output that obtains.
Shown in Figure 1A, surge absorber 4 is for having roughly cylindrical main part 4c, the pair of lead wires terminal 4a that gives prominence to from the axial both ends of this main part 4c, the discrete type element of 4b.Surge absorber 4 adopts such as existing rheostat (such as the lead monoxide rheostat) or discharger etc.As shown in Figure 2, by a lead terminal 4a is connected, another lead terminal 4b is connected with the earth point GND of circuit substrate 1 with the output (output of band pass filter 31c) of signal receiving circuit section 3, surge absorber 4 plays the effect of lightning arrester.
Shown in Figure 1A, B, radome 5 adopts metal to make, and the case shape that roughly is rectangle has the size of a lead terminal 4a of the surge absorber 4 that roughly covers the one side side that is positioned at circuit substrate 1.Radome 5 is in the face opening of relative circuit substrate 1, and also having can be by the peristome (not shown) of lead terminal 4a.
As shown in Figure 3, circuit substrate 1 employing roughly is octagonal insulated substrate and forms.Wherein, in Figure 1A, B, for simplicity of illustration circuit substrate 1 is illustrated as rectangle.
Shown in Figure 1A, in the circuit substrate 1, the through hole (not shown) of gps antenna element 2 usefulness is set in the position of departing from from circuit substrate 1 center (position of namely departing to the end from the center), and the pair of lead wires terminal 4a that surge absorber 4 is set to the position that the through hole opposition side of gps antenna element 2 usefulness is offset from the center at circuit substrate 1, the through hole 1a that 4b uses, 1b.In addition, the substantial middle section at circuit substrate 1 is provided with the through hole 1c that cable 7g described later uses.In addition, be provided with the through hole (not shown) of the used for electronic device that consists of signal receiving circuit section 3 at circuit substrate 1.In Fig. 3, only show through hole 1c, omit the diagram of other through holes.
In addition, as shown in Figure 3, at the peripheral portion of circuit substrate 1, the periphery of circuit substrate 1 is divided into quarter and is provided with 4 location hole 1d.But this location hole 1d is omitted in Figure 1A.
In addition, on the above-mentioned one side (above among Figure 1A) of circuit substrate 1, adopt gps antenna element 2, the various electronic devices of signal receiving circuit section 3 usefulness and the circuit pattern (not shown) that surge absorber 4 is formed for consisting of circuit shown in Figure 2, and the ground plate (not shown) that is formed by the thin-walled copper coin in another side (below among Figure 1A) adhesion.This ground plate is as earth point (earth connection) GND of surge absorber 4 grades.
By using the through hole of above-mentioned gps antenna element 2 usefulness, under the state that the one side that makes ground plane with circuit substrate 1 contacts, gps antenna element 2 is installed on the above-mentioned one side side of circuit substrate 1.In addition, by adopting the through hole of above-mentioned signal receiving circuit section 3 usefulness, the electronic device group that signal receiving circuit section 3 will consist of signal receiving circuit section 3 is installed on the one side side of circuit substrate 1.The main part 4c of surge absorber 4 is installed on the above-mentioned one side side of circuit substrate 1, each lead terminal 4a, 4b inserts respectively each through hole 1a from the above-mentioned one side side of circuit substrate 1, among the 1b, and each lead terminal 4a, the front end of 4b is welded on the another side (the following side among Figure 1B) of circuit substrate 1.
As mentioned above, by at circuit substrate 1 above-mentioned gps antenna element 2, signal receiving circuit section 3, surge absorber 4 being installed, can consist of circuit shown in Figure 2.
On the circuit substrate 1 that gps antenna element 2, signal receiving circuit section 3, surge absorber 4 are installed, radome 5 is installed.Radome 5 is positioned at the above-mentioned one side side of the circuit substrate 1 that gps antenna element 2 is installed, covering is positioned at a lead terminal 4a of the surge absorber 4 of this one side side, adopt conductive adhesive or scolding tin etc. and be fixed on the circuit substrate 1, be connected with earth point GND simultaneously.
Then, the housing 6 of taking in circuit substrate 1 is described.As shown in Figure 3, housing 6 is made of the matrix 7 of one side side (among Fig. 3 top) mounting circuit substrate 1 and the radome 8 that is installed on the one side side of this matrix 7 and covers circuit substrate 1.
Matrix 7 can be formed roughly discoid such as employing by the compression mod of the light metal systems such as aluminium, inferior lead alloy.Be provided with screw thread through hole 7a～7d that matrix 7 and radome 8 can connect respectively in conjunction with employed attachment screw S1～S4 at the peripheral portion of matrix 7.Screw thread through hole 7a～7d is arranged at the circumferential roughly position of 4 five equilibriums, peripheral portion (periphery) edge with matrix 7.In addition, the one side side (above among Fig. 3) at matrix 7 has been wholely set support 7e.Support 7e has and the respectively concavo-convex chimeric location of 4 location hole 1d of circuit substrate 1 projection (not shown).Under the state that utilizes location hole 1d and location definite position with projection, circuit substrate 1 is loaded on support 7e.In addition, the central portion at another face (below among Fig. 3) of matrix 7 is provided with the connector 7f that connects above-mentioned coaxial cable (high-frequency coaxial cable).This connector 7f adopts the cable 7g such as wire, is connected with the output of signal receiving circuit section 3 on being installed on circuit substrate 1.Therefore, by connecting coaxial cable on connector 7f, through connector 7f and cable 7g the output of above-mentioned coaxial cable with signal receiving circuit section 3 is connected, thereby gps signal can be sent to relay station.
Radome 8 employing thermoplastic resins (such as Merlon, fluororesin, polyphenylene oxide (PPO)) etc. are mended the material that blocking-up GPS uses signal, form the hollow conical shaped shape of bottom surface opening.In addition, in the bottom edge section of radome 8 screwed hole 8a～8d is set, the attachment screw S1～S4 that passes each screw thread through hole 7a～7d of matrix 7 is connected with each screwed hole 8a～8d respectively.Conical by radome 8 is roughly formed, at antenna assembly difficult accumulation dust and the snow of outdoor setting, and flying bird also will be difficult to stop on antenna assembly.In other words, by radome 8 is roughly formed taper shape, can prevent dust deposit, accumulated snow to pile up but also can avoid flying bird infringement etc.
The below describes the antenna assembly assemble method in the present embodiment.At first, to the circuit substrate 1 of gps antenna element 2, signal receiving circuit section 3, surge absorber 4 and radome 5 be installed as described above, in that the location hole 1d of circuit substrate 1 and the location of matrix 7 are used under the concavo-convex chimeric state of projection, load the support 7e in matrix 7.At this moment, the other end of the through hole 1c by circuit substrate 1 is connected an end with the connector 7f of matrix 7 cable 7g is derived to the another side side of circuit substrate 1, and adopts welding etc. to be connected with the output of signal receiving circuit section 3.Then, with going up the circuit substrate 1 that carries on the radome 8 covering matrixes 7 and covering on matrix 7, each attachment screw S1～S4 is inserted respectively among the screw thread through hole 7a～7d of matrix 7, each attachment screw S1～S4 is connected with each screwed hole 8a～8d of radome 8.Accordingly, matrix 7 and radome 8 combinations are finished the antenna assembly of present embodiment.
The antenna assembly of finishing the present embodiment of assembling is installed on the post top portion that outdoor assigned position arranges, and uses adopting under coaxial cable and the state that relay station is connected.The antenna assembly of present embodiment can use such as in order to carry out synchronously obtaining or forecasting earthquake etc. with moment data relay station running time.
In addition, for the action of antenna assembly, because the description thereof will be omitted with in the past identical event.
As mentioned above, because the antenna assembly of present embodiment comprises surge absorber 4, so can improve anti-thunder and lightning surge performance.And, because the lead terminal 4a of surge absorber 4 of one side side that adopts metallic shield 5 will be positioned at the installation gps antenna element 2 of circuit substrate 1 covers, so the caused radiated interference such as magnetic field of utilizing metallic shield 5 to block to flow through in a lead terminal 4a electric current to produce are transmitted to gps antenna element 2.Therefore, can suppress to sneak into the radiated interference that causes owing to surge absorber 4 is set in the signal of telecommunication of gps antenna element 2 output, can fully carry out the demodulation of GPS usefulness signal.
In addition, as mentioned above, in the present embodiment, gps antenna element 2 is installed in from the position of circuit substrate 1 center skew, and surge absorber 4 is installed in from circuit substrate 1 center to the position that the opposition side with gps antenna element 2 is offset.Thus, surge absorber 4 becomes far away with the distance of gps antenna element 2, can reduce the impact of the radiated interference from surge absorber 4 to gps antenna element 2.In addition, according to the behaviour in service of antenna assembly, can around antenna assembly, dispose metallic plate.As in the case, if gps antenna element 2 is disposed at the center of circuit substrate, then on the omnirange of gps antenna element 2, it is the same that space length from gps antenna element 2 to metallic plate becomes easily, if the same λ/4 (λ is the frequency that GPS uses signal) that for example are of space length, then gain reduction becomes large.Therefore, by gps antenna element 2 is located on the position of circuit substrate off-centring, even there is metallic plate around antenna assembly, gps antenna element 2 also is difficult to become the same to the metallic plate space length, thereby obtains reducing the such effect of gain reduction.
Yet, in the example shown in Figure 1A, Figure 1B, signal receiving circuit section 3 and surge absorber 4 are located at the one side side (the face side of gps antenna element 2 namely is installed) of circuit substrate 1, but also can shown in Fig. 4 A, signal receiving circuit section 3 be installed on the another side side of circuit substrate 1.
If like this, between signal receiving circuit section 3 and gps antenna element 2, there is the circuit substrate 1 with earth point GND, can suppress to be sneaked in the signal of telecommunication of gps antenna element 2 outputs by the radiated interference that signal receiving circuit section 3 produces.
In addition, shown in Fig. 4 B, also surge absorber 4 can be installed on the another side side of circuit substrate 1.Namely, also can be arranged at the another side side of circuit substrate 1 to the main part 4c of surge absorber 4, with each lead terminal 4a, 4b inserts respectively each through hole 1a from the another side side of circuit substrate 1, and 1b also is welded in each lead terminal front end the above-mentioned one side side of circuit substrate 1.At this moment, radome 5 covers the lead terminal 4a (being the fore-end of lead terminal 4a) of surge absorber 4 of the one side side of the installation gps antenna element 2 that is arranged in circuit substrate 1.If like this, the lead terminal 4a of surge absorber 4 only, the front end of 4b is arranged in the one side side of the installation gps antenna element 2 of circuit substrate 1, the situation that is positioned at the one side side of circuit substrate 1 with the main part 4c of surge absorber 4 is compared, can shorten the two lead terminal 4a that are positioned at circuit substrate 1 one side side, the length of 4b.And, because between the main part 4c of surge absorber 4 and gps antenna element 2, there is the circuit substrate 1 with earth point GND, so the radiated interference that is produced by the main part 4c of surge absorber 4 is difficult to be transmitted to gps antenna element 2.Therefore, the situation that is positioned at above-mentioned one side side with the main part 4c of surge absorber 4 is compared, and can further suppress to sneak into radiated interference in the signal of telecommunication of gps antenna element 2 output.
In addition, shown in Fig. 4 C, can also be out of shape the example shown in Fig. 4 B, signal receiving circuit section 3 is installed on the another side side of circuit substrate 1.That is, also can the two all be installed on the another side side of circuit substrate 1 signal receiving circuit section 3 and surge absorber 4.
If like this, radiated interference that can ground the same with Fig. 4 A Inhibitory signal receiving circuit section 3 is sneaked into the signal of telecommunication of gps antenna element 2 outputs, and also can suppress to sneak in the signal of telecommunication of gps antenna element 2 outputs with Fig. 4 B the radiated interference of surge absorber 4 the samely.
In addition, the shape of circuit substrate 1 and housing 6 is not limited to above-mentioned example, can carry out suitable distortion to it.In addition, the shape of radome 5 also is not limited to above-mentioned example, thereby so long as covers the shape that the lead terminal 4a of surge absorber 4 of the one side side of the installation gps antenna element 2 be arranged in circuit substrate 1 can spatially block lead terminal 4a and gps antenna element 2 and get final product.At this, so-called " shape that can spatially block " also do not mean that shape by radome 5 complete sealing wire terminal 4a, produces the shape of the impact in magnetic field etc. and refer to reduce owing to flowing through circuit among the lead terminal 4a.In addition, the antenna assembly of present embodiment constitutes and is suitable for using being set under the state of assigned position, to carry out synchronously obtaining and forecast earthquake with obtaining of determining displacement data etc. with data constantly of relay station, but the purposes of the antenna assembly of present embodiment is not limited to above-mentioned these purposes.Foregoing at execution mode 2～4 described later too.
Shown in Fig. 5 A, 5B, the antenna assembly of present embodiment comprises the circuit substrate 1 that gps antenna element 2 and signal receiving circuit section 3 are installed and the housing 6 (with reference to Fig. 3) of taking in circuit substrate 1.Have pair of lead wires terminal 4a in circuit substrate 1 installation, the surge absorber 4 of 4b, a lead terminal 4a of surge absorber 4 is connected with the output of signal receiving circuit section 3, and another lead terminal 4b is connected with the earth point GND of circuit substrate 1.One side (above among Fig. 5 A) at the installation gps antenna element 2 of circuit substrate 1 is provided with radome 50.Radome 50 adopts the metal manufacturing, forms essentially rectangular case shape, and shown in Fig. 5 A, 5B, the face relative with the above-mentioned one side side of circuit substrate 1 offered mouth, and has the size that can cover surge absorber 4 integral body.
Namely, what the antenna assembly of present embodiment comprised is not the radome 5 that only covers a lead terminal 4a of surge absorber 4, but comprise the radome 50 of surge absorber 4 integral body that cover the one side side be positioned at circuit substrate 1, different from the antenna assembly of above-mentioned execution mode 1 in this point.But the antenna assembly with above-mentioned execution mode 1 with regard to other structures is identical, and also the description thereof will be omitted so provide identical symbol with regard to same structure.
Because the antenna assembly of present embodiment comprises surge absorber 4, so can improve anti-thunder and lightning surge performance.And, because adopt metallic shield 50, not only a lead terminal 4a with surge absorber 4 covers, and surge absorber 4 integral body are all covered, so be transmitted to gps antenna element 2 except blocking the radiated interference of flowing through electric current among the lead terminal 4a and producing, the radiated interference that can also block another lead terminal 4b and surge absorber 4 main part 4c generation is transmitted to gps antenna element 2.Thus, can further suppress to sneak into the radiated interference that causes because surge absorber 4 is set in the signal of telecommunication of gps antenna element 2 output, fully carry out the demodulation of gps signal.
In the present embodiment, as shown in Figure 6A, also can similarly signal receiving circuit section 3 be installed on Fig. 4 A of execution mode 1 the another side side of circuit substrate 1.
In addition, shown in Fig. 6 B, also can similarly surge absorber 4 be installed on Fig. 4 B of execution mode 1 the another side side of circuit substrate 1.At this moment, radome 50 covers two lead terminal 4a, the 4b (being the fore-end of lead terminal 4a, 4b) of the surge absorber 4 of the one side side that is positioned at circuit substrate 1.By by radome 50 with two lead terminal 4a, 4b all covers, and can prevent from being transmitted in the gps antenna element 2 by the radiated interference that lead terminal 4a, 4b produce.
In addition, shown in Fig. 6 C, also can similarly the two be installed in the another side side of circuit substrate 1 with signal receiving circuit section 3 and surge absorber 4 with Fig. 4 C of execution mode 1.
Shown in Fig. 7 A, 7B, the antenna assembly of present embodiment comprises the circuit substrate 1 that gps antenna element 2 and signal receiving circuit section 3 are installed and the housing 6 (with reference to Fig. 3) of taking in circuit substrate 1.At circuit substrate 1 surge absorber 4 with pair of lead wires terminal 4a, 4b is installed, a lead terminal 4a of surge absorber 4 is connected with the output of signal receiving circuit section 3, and another lead terminal 4b is connected with the earth point GND of circuit substrate 1.One side (above among Fig. 7 A) at the installation gps antenna element 2 of circuit substrate 1 is provided with radome 51.Radome 51 adopts the metal manufacturing, form the case shape, shown in Fig. 7 A, 7B, the face relative with the above-mentioned one side side of circuit substrate 1 offered mouth, and has the size of the electronic device (surge absorber 4 and signal receiving circuit section 3) that can all cover except gps antenna element 2.
Namely, what the antenna assembly of present embodiment comprised is not the radome 5 that only covers a lead terminal 4a of surge absorber 4, but comprise being positioned at surge absorber 4 and the signal receiving circuit section 3 whole radomes 51 that cover of the one side side of circuit substrate 1, different from the antenna assembly of above-mentioned execution mode 1 in this point.But the antenna assembly with above-mentioned execution mode 1 with regard to other structures is identical, and also the description thereof will be omitted so provide identical symbol with regard to same structure.
Therefore, according to the antenna assembly of present embodiment, because comprise surge absorber 4, so play the effect that can improve anti-thunder and lightning surge performance.And, because adopt metallic shield 51 that surge absorber 4 and signal receiving circuit section 3 are all covered, be transmitted to gps antenna element 2 so not only can block the radiated interference that the magnetic field that produces because of the electric current of flowing through among the lead terminal 4a etc. causes, can also block the radiated interference that another lead terminal 4b and surge absorber 4 main part 4c, signal receiving circuit section 3 produce and be transmitted to gps antenna element 2.Thus, not only can suppress in the signal of telecommunication of gps antenna element 2 output because sneaking into of radiated interference that surge absorber 4 causes is set, the demodulation of GPS usefulness signal is fully carried out in sneaking into of radiated interference that can also Inhibitory signal receiving circuit section 3.
In the present embodiment, shown in Fig. 8 A, also signal receiving circuit section 3 can be installed on the another side side of circuit substrate 1.
In addition, shown in Fig. 8 B, also surge absorber 4 can be installed on the another side side of circuit substrate 1.
In addition, shown in Fig. 8 C, also can both be installed in the another side side of circuit substrate 1 with signal receiving circuit section 3 and surge absorber 4.
Such as Fig. 9 and shown in Figure 10, the antenna assembly of present embodiment comprises: the circuit substrate 10 that gps antenna element 2, signal receiving circuit section 3 and surge absorber 4 are installed; Cover the metallic shield 53 of surge absorber 4; Earthing device (back detailed description) and housing 60 that radome 53 is connected with the earth point of circuit substrate 10.Housing 60 is equipped with the matrix 7 of circuit substrate 10 by the one side side and the radome 80 that has the rib 8f of fixed mask cover 53 and be installed on the above-mentioned one side side of matrix 7 consists of.In addition, in the following description, also description thereof is omitted just then to adopt prosign with above-mentioned execution mode 1 same structure.
Utilize the through hole of gps antenna element 2 usefulness, under the state that the one side that makes ground plane with circuit substrate 10 contacts, gps antenna element 2 is installed in the one side side (above among Figure 10) of circuit substrate 10.The electronic device group of the formation signal receiving circuit section 3 of signal receiving circuit section 3 adopts the through hole of signal receiving circuit section 3 usefulness to be installed on the another side side of circuit substrate 10.The main part 4c of surge absorber 4 is installed on the one side side of circuit substrate 10, each lead terminal 4a, and 4b inserts respectively each through hole 1a from the one side of circuit substrate, and among the 1b, with each lead terminal 4a, the front end of 4b is welded in the another side side of circuit substrate 10.
By gps antenna element 2, signal receiving circuit section 3, surge absorber 4 are installed on the circuit substrate 10, consist of circuit shown in Figure 2.
The described radome of radome 80 and above-mentioned execution mode 18 is the same, but near the inner peripheral surface the screwed hole 8a the integrally formed rib 8f that is useful on fixed mask cover 53.What (i.e. the face relative with circuit substrate 10) was provided for taking in radome 53 below in Figure 10 of this rib 8f takes in groove 8g.The interior shape size of taking in groove 8g is roughly the same with the profile size of the 53a of cover body section of radome 53, and when groove 8g was taken in the 53a of cover body section insertion, then radome 53 was fixed by rib 8f.
In addition, shown in Fig. 9 A, when the matrix 7 that carries circuit substrate 10 was installed radome 80, floor 8f was formed at the position that the 53a of cover body section covers surge absorber 4.In addition, be installed on the matrix 7 that carries circuit substrate 10 when radome 80, then under the 1st hole 1f of the 1st ground strip 1e state consistent with the 2nd hole 53c of the 2nd ground strip 53b, the 1st ground strip 1e overlaps with the 2nd ground strip 53b.As a result, via the 1st hole 1f and the 2nd hole 53c, the screwed hole 8a of attachment screw S1 and radome 80 is screwed up from the screw thread through hole 7a of matrix 7.
Here, the antenna assembly of present embodiment comprises: screw thread through hole 7a, and it is located on the matrix 7, and matrix 7 and radome 80 are connected in conjunction with the attachment screw S1 that adopts; Screwed hole 8a, it is located on the radome 80, is connected with the attachment screw S1 that connects screw thread through hole 7a; The 1st ground strip 1e, it has the 1st hole 1f that is located on the circuit substrate 10 and connects attachment screw S1, is electrically connected with the earth point of circuit substrate 10; The 2nd ground strip 53b, it has the 2nd hole 53c that is located on the radome 53 and connects attachment screw S1, when matrix 7 and radome 80 in conjunction with the time under the 2nd hole 53c state consistent with the 1st hole 1f, overlap with the 1st ground strip 1e, constitute the earthing mechanism that above-mentioned radome 53 is connected with the earth point of circuit substrate 10 by above-mentioned screw through hole 7a, screwed hole 8a, the first ground strip 1e and the second ground strip 53b.By attachment screw S1 is connected with screwed hole 8a with the 2nd hole 53c via the 1st hole 1f and attachment screw S2～S4 is connected with each screwed hole 8b～8d from screw thread through hole 7a, and matrix 7 and radome 80 are mutually combined.When matrix 7 and radome 80 in conjunction with the time, then the 1st ground strip 1e and the 2nd ground strip 53b are clipped between matrix 7 and the radome 80, guarantee contacting of the 1st ground strip 1e and the 2nd ground strip 53b.Therefore, by matrix 7 and radome 80 are mutually combined, radome 53 stably is connected with the earth point of circuit substrate 10.
Then, the installation method of present embodiment antenna assembly described.At first, circuit substrate 10 with the above-mentioned gps antenna element 2 of the installation of antenna assembly, signal receiving circuit section 3, surge absorber 4, use under the concavo-convex chimeric state of projection at the location hole 1d of circuit substrate 10 and the location of matrix 7, load on the support 7e of matrix 7.At this moment, adopt welding to wait the other end of the cable 7g that an end is connected with the connector 7f of matrix 7 to be connected in the output of signal receiving circuit section 3.
Then, take in groove 8g with what the 53a of cover body section of radome 53 inserted rib 8f, radome 53 is fixed in radome 80.Then, radome 80 is covered on the matrix 7 to cover circuit substrate 10.At this moment, under the 1st hole 1f state consistent with the 2nd hole 53c, the 2nd ground strip 53b is overlapped with the 1st ground strip 1e.
Then, attachment screw S1 is connected with the screwed hole 8a of radome 80 with the 2nd hole 53c via the 1st hole 1f from the screw thread through hole 7a of matrix 7.And, make each attachment screw S2～S4 connect each screwed hole 8b～8d of radome 80 from each screw thread through hole 7b of matrix 7～7d, matrix 7 is connected with radome 80 accordingly.
Through above operation, not only radome 53 is configured in the one side side of circuit substrate 10 and covers on the position of surge absorber 4, and radome 53 is connected with earth point by above-mentioned earthing mechanism.
Antenna assembly and the execution mode 1 of finishing the present embodiment of assembling similarly use.
The antenna assembly of present embodiment since in radome 80 fixed mask cover 53, so can radome 53 be located at by radome 80 being covered on matrix 7 the one side side of circuit substrate 10.Therefore, need not to adopt welding to wait with execution mode 1 the samely radome 53 is fixed on the circuit substrate 10, thereby so that assembling operation becomes easy.
In addition, when radome 80 is removed from matrix 7, then radome 53 also removes from circuit substrate 10 simultaneously.So, only need simple operation that radome 80 is disassembled from matrix 7, naked eyes carry out the affirmation (for example weld crack, welding omit affirmation) of the connection status of surge absorber 4 and circuit substrate 10 and surge absorber 4 oneself states etc. then and there.In addition, because utilize existing ground connection for connecting quite simple syndeton that radome 80 is connected with matrix and realizing connecting radome 53 and circuit substrate earth point, so can be easy to reduce cost.
Certainly, the antenna assembly of present embodiment is the same with execution mode 1, has the anti-thunder and lightning surge performance of raising and prevents that radiated interference is to gps antenna element propagation texts.
In addition, in the antenna assembly of present embodiment, surge absorber 4 is installed on the one side side of circuit substrate 10, signal receiving circuit section 3 is installed on the another side side of circuit substrate 10, but, shown in Fig. 5 A, 5B, also surge absorber 4 and 3 two in signal receiving circuit section all can be installed on the one side side of circuit substrate.Perhaps, shown in Fig. 6 B, also surge absorber 4 can be disposed at the another side side of circuit substrate 10, and signal receiving circuit section 3 be installed on the one side side of circuit substrate 10.Perhaps, shown in Fig. 6 C, also surge absorber 4 and 3 two in signal receiving circuit section all can be installed on the another side side of circuit substrate.
In addition, the antenna assembly of present embodiment adopts the radome 53 that covers whole surge absorber, but also can adopt the radome of a lead terminal 4a who as described in the enforcement mode 1, only covers surge absorber 4, also can adopt surge absorber 4 and signal receiving circuit section 3 whole radomes that cover on the one side side that as described in the enforcement mode 3, will be positioned at circuit substrate 10.In addition, in the housing 60 of present embodiment, at matrix 7 screw thread through hole 7a～7d that attachment screw S1～S4 connects is set, screwed hole 8a～the 8d of being combined with the attachment screw S1～S4 that connects screw thread through hole 7a～7d is set in radome 80, but also can be on the contrary, at radome 80 screwed hole that attachment screw S1～S4 connects is set, arranges and the attachment screw that connects the screw thread through hole at matrix 7
The screwed hole of S1～S4 combination.This point in the housing 6 of execution mode 1～3 too.
Claims (7)
1. antenna assembly, it comprises: the gps antenna element; The signal receiving circuit section that the GPS that above-mentioned gps antenna element is received amplifies and exports with signal; Have that pair of lead wires terminal and one of them lead terminal are connected with the output of above-mentioned signal receiving circuit section and surge absorber that another lead terminal is connected with earth point; The circuit substrate of above-mentioned gps antenna element, above-mentioned signal receiving circuit section and above-mentioned surge absorber is installed, one side at the above-mentioned gps antenna element of the installation of foregoing circuit substrate is provided with metal radome, this radome only covers an above-mentioned lead terminal of the above-mentioned surge absorber that is positioned at foregoing circuit substrate one side side, it is characterized in that, also comprise:
Carry the matrix of foregoing circuit substrate in the one side side;
Has the rib for fixing above-mentioned radome, at the radome that is installed under the state by the fixing above-mentioned radome of above-mentioned rib on the above-mentioned matrix one side side;
When above-mentioned radome is installed on the above-mentioned matrix, will be fixed in the earthing mechanism that the above-mentioned radome on the above-mentioned rib is connected with the earth point of foregoing circuit substrate,
Above-mentioned earthing mechanism comprises:
The screw thread through hole, it is located in above-mentioned matrix and the above-mentioned radome any, make above-mentioned matrix and above-mentioned radome in conjunction with the time attachment screw that adopts connect;
Screwed hole, it is located on another of above-mentioned matrix and above-mentioned radome, screws up with the above-mentioned attachment screw that connects above-mentioned screw thread through hole;
The 1st ground strip, it has the 1st hole of being located on the foregoing circuit substrate and connecting above-mentioned attachment screw, is electrically connected with foregoing circuit substrate earth point;
The 2nd ground strip, it has the 2nd hole of being located on the above-mentioned radome and connecting above-mentioned attachment screw, when above-mentioned matrix when above-mentioned radome is combined, overlapping with above-mentioned the 1st ground strip under the state consistent with above-mentioned the 1st hole of above-mentioned the 2nd hole,
By above-mentioned attachment screw is screwed up via above-mentioned the 1st hole and above-mentioned the 2nd hole and above-mentioned screwed hole from above-mentioned screw thread through hole, above-mentioned matrix and above-mentioned radome are mutually combined.
2. an antenna assembly is characterized in that, comprising: the gps antenna element; The signal receiving circuit section that the GPS that above-mentioned gps antenna element is received amplifies and exports with signal; Have that pair of lead wires terminal and one of them lead terminal are connected with the output of above-mentioned signal receiving circuit section and surge absorber that another lead terminal is connected with earth point; The circuit substrate of above-mentioned gps antenna element, above-mentioned signal receiving circuit section and above-mentioned surge absorber is installed, one side at the above-mentioned gps antenna element of the installation of foregoing circuit substrate is provided with metal radome, this radome covering is positioned at the above-mentioned surge absorber integral body of foregoing circuit substrate one side side or the above-mentioned pair of lead wires terminal of above-mentioned surge absorber, it is characterized in that, also comprise:
Carry the matrix of foregoing circuit substrate in the one side side;
Has the rib for fixing above-mentioned radome, at the radome that is installed under the state by the fixing above-mentioned radome of above-mentioned rib on the above-mentioned matrix one side side;
When above-mentioned radome is installed on the above-mentioned matrix, will be fixed in the earthing mechanism that the above-mentioned radome on the above-mentioned rib is connected with the earth point of foregoing circuit substrate,
Above-mentioned earthing mechanism comprises:
The screw thread through hole, it is located in above-mentioned matrix and the above-mentioned radome any, make above-mentioned matrix and above-mentioned radome in conjunction with the time attachment screw that adopts connect;
Screwed hole, it is located on another of above-mentioned matrix and above-mentioned radome, screws up with the above-mentioned attachment screw that connects above-mentioned screw thread through hole;
The 1st ground strip, it has the 1st hole of being located on the foregoing circuit substrate and connecting above-mentioned attachment screw, is electrically connected with foregoing circuit substrate earth point;
The 2nd ground strip, it has the 2nd hole of being located on the above-mentioned radome and connecting above-mentioned attachment screw, when above-mentioned matrix when above-mentioned radome is combined, overlapping with above-mentioned the 1st ground strip under the state consistent with above-mentioned the 1st hole of above-mentioned the 2nd hole,
By above-mentioned attachment screw is screwed up via above-mentioned the 1st hole and above-mentioned the 2nd hole and above-mentioned screwed hole from above-mentioned screw thread through hole, above-mentioned matrix and above-mentioned radome are mutually combined.
3. antenna assembly as claimed in claim 1 or 2, wherein, the foregoing circuit substrate has the through hole of each lead terminal that inserts respectively above-mentioned surge absorber,
Above-mentioned surge absorber is installed in the another side of circuit substrate, and each lead terminal inserts above-mentioned through hole from the another side side of foregoing circuit substrate, makes the front end of each lead terminal be positioned at the above-mentioned one side side of foregoing circuit substrate.
4. antenna assembly as claimed in claim 1 or 2, wherein, above-mentioned gps antenna element is installed in the position of departing from foregoing circuit substrate center position, above-mentioned surge absorber be installed in from foregoing circuit substrate center position to the position of above-mentioned gps antenna element opposition side skew.
5. an antenna assembly is characterized in that, comprising:
The gps antenna element;
The signal receiving circuit section that the GPS that above-mentioned gps antenna element is received amplifies and exports with signal;
Have that pair of lead wires terminal and one of them lead terminal are connected with the output of above-mentioned signal receiving circuit section and surge absorber that another lead terminal is connected with earth point;
The circuit substrate of above-mentioned gps antenna element, above-mentioned signal receiving circuit section and above-mentioned surge absorber is installed,
One side at the above-mentioned gps antenna element of the installation of foregoing circuit substrate is provided with metal radome, and this radome only covers an above-mentioned lead terminal of the above-mentioned surge absorber that is positioned at foregoing circuit substrate one side side;
Carry the matrix of foregoing circuit substrate in the one side side;
Has the rib for fixing above-mentioned radome, at the radome that is installed under the state by the fixing above-mentioned radome of above-mentioned rib on the above-mentioned matrix one side side;
When above-mentioned radome is installed on the above-mentioned matrix, will be fixed in the earthing mechanism that the above-mentioned radome on the above-mentioned rib is connected with the earth point of foregoing circuit substrate,
Above-mentioned earthing mechanism comprises:
The screw thread through hole, it is located in above-mentioned matrix and the above-mentioned radome any, make above-mentioned matrix and above-mentioned radome in conjunction with the time attachment screw that adopts connect;
Screwed hole, it is located on another of above-mentioned matrix and above-mentioned radome, screws up with the above-mentioned attachment screw that connects above-mentioned screw thread through hole;
The 1st ground strip, it has the 1st hole of being located on the foregoing circuit substrate and connecting above-mentioned attachment screw, is electrically connected with foregoing circuit substrate earth point;
The 2nd ground strip, it has the 2nd hole of being located on the above-mentioned radome and connecting above-mentioned attachment screw, when above-mentioned matrix when above-mentioned radome is combined, overlapping with above-mentioned the 1st ground strip under the state consistent with above-mentioned the 1st hole of above-mentioned the 2nd hole,
By above-mentioned attachment screw is screwed up via above-mentioned the 1st hole and above-mentioned the 2nd hole and above-mentioned screwed hole from above-mentioned screw thread through hole, above-mentioned matrix and above-mentioned radome are mutually combined.
6. antenna assembly as claimed in claim 5, wherein, the foregoing circuit substrate has the through hole of each lead terminal that inserts respectively above-mentioned surge absorber,
Above-mentioned surge absorber is installed in the another side of circuit substrate, and each lead terminal inserts above-mentioned through hole from the another side side of foregoing circuit substrate, makes the front end of each lead terminal be positioned at the above-mentioned one side side of foregoing circuit substrate.
7. antenna assembly as claimed in claim 5, wherein, above-mentioned gps antenna element is installed in the position of departing from foregoing circuit substrate center position, above-mentioned surge absorber be installed in from foregoing circuit substrate center position to the position of above-mentioned gps antenna element opposition side skew.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006144655 | 2006-05-24 | ||
| JP144655/06 | 2006-05-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101079516A CN101079516A (en) | 2007-11-28 |
| CN101079516B true CN101079516B (en) | 2013-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201328584U Expired - Lifetime CN2929983Y (en) | 2006-05-24 | 2006-07-28 | Antenna device |
| CN 200610138982 Active CN101079516B (en) | 2006-05-24 | 2006-07-28 | Antenna device |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201328584U Expired - Lifetime CN2929983Y (en) | 2006-05-24 | 2006-07-28 | Antenna device |
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| CN (2) | CN2929983Y (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2929983Y (en) * | 2006-05-24 | 2007-08-01 | 松下电工株式会社 | Antenna device |
| CN103050768B (en) * | 2012-12-20 | 2015-04-29 | 江苏指南针导航通信技术有限公司 | Antenna mounting method, antenna device and satellite navigation receiving equipment |
| CN207474678U (en) * | 2017-11-30 | 2018-06-08 | 深圳市大疆创新科技有限公司 | Antenna house and with its radar system |
| JP6801820B2 (en) * | 2018-09-27 | 2020-12-16 | 富士電機株式会社 | Power converter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6016128A (en) * | 1997-09-04 | 2000-01-18 | Harada Industry Co., Ltd. | GPS wave antenna apparatus |
| CN1604389A (en) * | 2003-09-29 | 2005-04-06 | 三美电机株式会社 | Antenna device |
| CN1681157A (en) * | 2004-04-09 | 2005-10-12 | 三美电机株式会社 | Antenna unit |
| CN2929983Y (en) * | 2006-05-24 | 2007-08-01 | 松下电工株式会社 | Antenna device |
-
2006
- 2006-07-28 CN CNU2006201328584U patent/CN2929983Y/en not_active Expired - Lifetime
- 2006-07-28 CN CN 200610138982 patent/CN101079516B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6016128A (en) * | 1997-09-04 | 2000-01-18 | Harada Industry Co., Ltd. | GPS wave antenna apparatus |
| CN1604389A (en) * | 2003-09-29 | 2005-04-06 | 三美电机株式会社 | Antenna device |
| CN1681157A (en) * | 2004-04-09 | 2005-10-12 | 三美电机株式会社 | Antenna unit |
| CN2929983Y (en) * | 2006-05-24 | 2007-08-01 | 松下电工株式会社 | Antenna device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN2929983Y (en) | 2007-08-01 |
| CN101079516A (en) | 2007-11-28 |
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