CN102386481A

CN102386481A - Capacitive antenna structure

Info

Publication number: CN102386481A
Application number: CN2010102713185A
Authority: CN
Inventors: 杨才毅; 徐伟泓
Original assignee: Cirocomm Technology Corp
Current assignee: Cirocomm Technology Corp
Priority date: 2010-09-01
Filing date: 2010-09-01
Publication date: 2012-03-21
Anticipated expiration: 2030-09-01
Also published as: CN102386481B

Abstract

The invention discloses a capacitive antenna structure. The capacitive antenna structure comprises a substrate and a flake-shaped capacitor, wherein the substrate is provided with radiation metal layer and a grounding metal layer; the radiation metal layer comprises a first hollow part for exposing the substrate; the first hollow part is provided with a signal feed hole; and a second hollow part is formed on the edge; a third hollow part for exposing the substrate and corresponding to the second hollow part is arranged on the edge of the grounding metal layer; the two sides of the third hollow part are provided with a first connecting point and a second connecting point so as to electrically connect with the capacitor; the third hollow part is connected with a fourth hollow part used for exposing the substrate; a signal transmitting line is arranged in the fourth hollow part; and the signal transmitting line comprises the signal feed hole so as to connect a cable. In the capacitive antenna structure, the energy of the antenna is coupled and excited by utilizing the capacitor, so that the antenna has good receiving and emitting effects.

Description

Capacitive antenna structure

Technical field

The present invention relates to a kind of antenna, relate in particular to a kind of antenna structure with sheet shape capacitor.

Background technology

Present many portable electronic devices all can adopt exposed antenna structure in order to have good reception, and exposed antenna structure not only can't satisfy small shape Design of device, more can not satisfy the demand of the concealed design of antenna.

The dealer is in order to let antenna level off to the design of little miniaturization; It mainly is the antenna pattern that on a substrate, is manufactured with a plane; And utilize the ratio of major and minor axis of the pattern of this flat plane antenna; And uniform live width such as non-reaches the operating characteristic that receives and transmit, and makes this antenna have approximate isotropic radiation pattern.But the major and minor axis ratio of the pattern of the flat plane antenna on the antenna, and uniform live width such as non-is difficult for adjustment in design, and the pattern of antenna also can be complicated more, be difficult for laying, therefore cause the antenna of little miniaturization in design, to have many puzzlements.

Summary of the invention

Main purpose of the present invention; Be to improve the existing problem of traditional antenna, the present invention increases the capacitor of a sheet shape on antenna, makes the energy being coupled of antenna and excites; Make the reception and the launching effect of antenna better, also let the structure of antenna more simply reach easy making.

In order to reach above-mentioned purpose, the present invention provides a kind of capacitive antenna structure, comprising:

One substrate; It has a positive and back side, has a radiation metal layer on this front, have in this radiation metal layer one substrate front side is exposed first hollow-out parts; Has a signal feed-in hole in this first hollow-out parts; This first hollow-out parts makes this signal feed-in hole and this radiation metal layer keep a spacing, to form not electrically connect state, has one second hollow-out parts on the edge of this radiation metal layer; In addition, on this back side, have a ground metal layer, have on this ground metal layer edge one substrate back is exposed the 3rd hollow-out parts, the 3rd hollow-out parts is to second hollow-out parts that should substrate front side; The 3rd hollow-out parts both sides have first contact and second contact, the 3rd hollow-out parts be connected with one substrate is exposed the 4th hollow-out parts, have a signal transmssion line in the 4th hollow-out parts, this signal transmssion line includes this signal feed-in hole;

One capacitor, electrically connect are on this first contact and second contact, and to second hollow-out parts that should substrate front side.

Effect of the present invention is that the present invention increases the capacitor of a sheet shape on antenna, makes the energy being coupled of antenna and excites, and makes the reception of antenna and launching effect better, also lets the structure of antenna more simply reach easy making.

Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.

Description of drawings

Fig. 1 is an antenna face stereoscopic sketch map of the present invention;

Fig. 2 is the local enlarged diagram of Fig. 1;

Fig. 3 is an antenna back appearance schematic perspective view of the present invention;

Fig. 4 is the local enlarged diagram of Fig. 3;

Fig. 5 is Fig. 4 electrically connect sheet shape capacitor sketch map;

Fig. 6 is another embodiment sketch map of antenna of the present invention;

Fig. 7 is the local enlarged diagram of Fig. 6.

Wherein, Reference numeral

Antenna 10

Substrate 1

Positive 11

Radiation metal layer 12

First hollow-out parts 13

Signal feed-in hole 14

Second hollow-out parts 15

The back side 16

Ground metal layer 17

First contact 171

Second contact 172

Signal transmssion line 173

The 3rd hollow-out parts 18

The 4th hollow-out parts 19

Capacitor 2

Lead 3

Core stamen 31

Antenna terminal 4

Embodiment

Now relevant technology contents of the present invention and detailed description cooperate graphic explanation following at present:

See also Fig. 1, Fig. 2, be the local enlarged diagram of antenna face stereoscopic of the present invention and Fig. 1.As shown in the figure: capacitive antenna structure of the present invention, have a substrate 1 on this antenna 10, this substrate 1 is any of glass fiber or pottery.Have one positive 11 on this substrate 1; Has a radiation metal layer 12 on this front 11; Have first hollow-out parts 13 that lets substrate 1 positive 11 expose of a circle in this radiation metal layer 12, have a signal feed-in hole 14 in this first hollow-out parts 13, this first hollow-out parts 13 makes this signal feed-in hole 14 and this radiation metal layer 12 keep a spacing; Forming not electrically connect state, and this signal feed-in hole 14 can link general lead (not shown).On the edge of this radiation metal layer 12, has square or rectangular second hollow-out parts 15 in addition.

See also Fig. 3, Fig. 4, Fig. 5, for amplifying and Fig. 4 electrically connect sheet shape capacitor sketch map the part of antenna back appearance solid of the present invention and Fig. 3.As shown in the figure: this substrate 1 has a back side 16; Has a ground metal layer 17 on this back side 16; Have one on these ground metal layer 17 edges and make second hollow-out parts 15 that 18 pairs of the 3rd hollow-out parts 18, the three hollow-out parts that substrate 1 back side 12 exposes should substrate 1 positive 11.The 3rd hollow-out parts 18 both sides have first contact 171 and second contact 172; The 3rd hollow-out parts 18 is connected with S-shaped the 4th hollow-out parts 19; Has a L shaped signal transmssion line 173 in the 4th hollow-out parts 19; Include this signal feed-in hole 14 on this signal transmssion line 173, when general lead (not shown) is pegged graft in this signal feed-in hole 14, can with these signal transmssion line 173 electrically connects.

This capacitor 2, for sheet shape can surface mount on this first contact 171 and second contact 172, and the second positive hollow-out parts 15 of counterpart substrate 1.When electric current flows into; This electric current can be flowed through this first contact 171 and this capacitor 2 to this second contact 172; Make the energy being coupled of antenna structure and eject, and the electric current of the capacitor 2 of flowing through agitated out, make the reception of antenna structure or the effect that transmits better.Simultaneously, second hollow-out parts 15 at 2 counterpart substrates of capacitor 1 positive 11 mainly is to avoid capacitor 2 cresteds (short circuit), and forms the high frequency short circuit phenomenon of antenna.The area of this second hollow-out parts 15 is greater than the volume of this capacitor 2.

See also Fig. 6, Fig. 7, be another embodiment of antenna of the present invention and the local enlarged diagram of Fig. 6.As shown in the figure: as when antenna of the present invention uses, a lead 3 inner core stamens 31 to be passed the signal feed-in hole 14 of this substrate 1, pass signal transmssion line 173 electrically connects at 14 backs, signal feed-in hole and this substrate 1 back side 12 at this core stamen 31.The other end electrically connect of this lead 3 has an antenna terminal 4, and this antenna terminal 4 can electrically connect the coaxial wire (not shown) so that the user to be provided.

Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims

1. a capacitive antenna structure is characterized in that, comprising:

One substrate; It has a positive and back side, has a radiation metal layer on this front, have in this radiation metal layer one substrate front side is exposed first hollow-out parts; Have a signal feed-in hole in this first hollow-out parts, on the edge of this radiation metal layer, have one second hollow-out parts; In addition, on this back side, have a ground metal layer, have on this ground metal layer edge one substrate back is exposed the 3rd hollow-out parts, the 3rd hollow-out parts is to second hollow-out parts that should substrate front side; The 3rd hollow-out parts both sides have first contact and second contact, the 3rd hollow-out parts be connected with one substrate is exposed the 4th hollow-out parts, have a signal transmssion line in the 4th hollow-out parts, this signal transmssion line includes this signal feed-in hole;

2. capacitive antenna structure according to claim 1 is characterized in that, this substrate is any one of glass fiber or pottery.

3. capacitive antenna structure according to claim 1; It is characterized in that; This first hollow-out parts is circular, and this first hollow-out parts makes this signal feed-in hole and this radiation metal layer keep a spacing, so that this signal feed-in hole and this radiation metal layer form state of insulation.

4. capacitive antenna structure according to claim 1 is characterized in that, this second hollow-out parts be square or rectangular any one.

5. capacitive antenna structure according to claim 1 is characterized in that the 4th hollow-out parts is S-shaped.

6. capacitive antenna structure according to claim 5 is characterized in that, this signal transmssion line is L shaped.

7. capacitive antenna structure according to claim 1 is characterized in that, this capacitor is a sheet.

8. capacitive antenna structure according to claim 1 is characterized in that the area of this second hollow-out parts is greater than the volume of this capacitor.

9. capacitive antenna structure according to claim 1 is characterized in that, also includes a lead, has a core stamen in this lead, and an end of this core stamen is inserted in this signal feed-in hole, with the signal transmssion line electrically connect of substrate back.

10. capacitive antenna structure according to claim 9 is characterized in that, the core stamen of this lead one end is inserted in signal feed-in hole and signal transmssion line electrically connect, and the other end electrically connect of this lead has an antenna terminal.