WO2012069259A1 - Wlan-radio module for industrial applications - Google Patents

Wlan-radio module for industrial applications Download PDF

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Publication number
WO2012069259A1
WO2012069259A1 PCT/EP2011/068331 EP2011068331W WO2012069259A1 WO 2012069259 A1 WO2012069259 A1 WO 2012069259A1 EP 2011068331 W EP2011068331 W EP 2011068331W WO 2012069259 A1 WO2012069259 A1 WO 2012069259A1
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Prior art keywords
radio module
module
wlan radio
wlan
frequency
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PCT/EP2011/068331
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German (de)
French (fr)
Inventor
Olaf Schilperoort
Nidal Fawaz
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Hirschmann Automation And Control Gmbh
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Publication of WO2012069259A1 publication Critical patent/WO2012069259A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/109—Means associated with receiver for limiting or suppressing noise or interference by improving strong signal performance of the receiver when strong unwanted signals are present at the receiver input
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits

Definitions

  • WLAN radio module for industrial applications
  • the invention relates to a WLAN radio module according to the features of the preamble of claim 1.
  • WLAN radio modules are known for applications in the private sector or in the office sector.
  • the company AVM manufactures WLAN routers or access points that are equipped with WLAN functionality under the name "FritzBox.”
  • defined environmental conditions prevail, such as temperatures, which are generally 15
  • there are no interfering signals in these areas which disturb the high-frequency signals received by the WLAN radio module considerably.
  • levels are so low that thereby the operation of the WLAN wireless module is not disturbed and does not affect the actual payload signals to be transmitted and consequently the performance of the WLAN wireless module in the processing of the received signals is not or not significantly affected.
  • the invention is therefore based on the object of improving a WLAN radio module in such a way that its field of application is significantly expanded.
  • the WLAN radio module is suitable and designed to be used in an industrial environment, and that at least one antenna is followed by a filter device that is designed to generate high-frequency signals having a frequency according to IEEE 802.1 1 standard, in particular 2.4 GHz or 5 GHz, lets pass and blocks signals with deviating frequencies or at least suppressed
  • the electrical and electronic components that realize the filter device are suitable and designed to form an overvoltage protection.
  • This embodiment has the advantage that the radio module and the entire terminal is protected from coming from outside the device voltage discharges that can lead to impairment or destruction of the module or device.
  • WLAN radio module can also work in larger temperature ranges and under harsh environmental conditions, such as are not present in the private sector or in the office sector.
  • the radio module can be operated in an extended temperature range, because the selection of the electrical and electronic components used in the module as well as the board and line material used are designed for these temperature requirements.
  • the antenna connectors used are more stable against vibrations and have a lower contact resistance or RF attenuation.
  • the filter and the discharge protection ensure that the module can also be used outdoors without taking additional lightning protection measures.
  • each antenna of the WLAN radio module is associated with a high-frequency filter device, in particular in the range of 2.4 GHz (+/- 10%) and / or 5 GHz (+/- 20%), which causes the Signals with Nutzinhalt in the said frequencies or frequency ranges pass through the filter device and can get to the subsequent data processing means, whereas frequencies in other frequency ranges, which are not to be received with the WLAN radio module, blocked, d. H. be blocked or at least significantly suppressed.
  • This has the advantage that only those frequencies with the corresponding useful signals reach the data processing means which are actually desired and should be processed, so that the capacities, in particular the processing capacities of the data processing means, are not affected by the interference signals. This results in a much better performance of the entire WLAN radio module, thereby increasing the speed and reliability of data processing of such data with payloads received from the at least one antenna.
  • the radio module is protected against electrical discharges or currents which reach the module via the antenna cable and conducts them away, so that no damage is caused to the module and the device.
  • FIG. 1 shows a frequency spectrum, wherein the frequency (in this case from 109 MHz to 6 GHz) on the X-axis and the level of the signals located in the space on the Y-axis and that of the WLAN Radio modules can be received, are applied. It can be seen that a plurality of high-level signals are in the room, which can be received in addition to the WLAN signal from the at least one antenna of the WLAN radio module and processed there by their data processing means.
  • the invention provides measures to block or at least significant suppression of those signals that are not in the WLAN or WIFI range, before.
  • a wireless radio module 1 (which is in particular a network infrastructure device such as a switch) is used, which is at least one antenna 2, but usually more than one antenna (in the embodiment of FIG three antennas 2, 3 and 4 for receiving and / or transmit diversity and / or MiMo (Multiple In Multiple Out) .
  • the high-frequency signal paths of the respective antennas 2 to 4 are followed by signal conditioning and signal processing front-end modules 5 to 7, for example, as ready-made and programmable chips are arranged on a printed circuit board of the wireless radio module 1.
  • the signals processed by the front-end modules 5 to 7 are fed to an output 10 via a transmission receiving module 8 and corresponding input and output means 9.
  • the received from the antennas 2 to 4 high-frequency signals converted by the front end modules 5 to 7 are supplied to the output 10 by means of the SendeVEmpfangsmoduls 8 and input and output means 9, in particular a Mini PCIE interface.
  • the means described so far are not only designed for signal transmission and processing in one direction, but are also designed bidirectionally as a rule, which means that the output 10 is also an input via which the WLAN radio module 1 signals can be supplied, which are processed in the wireless radio module 1 and high-frequency to be emitted via the antennas 2 to 4. In a simple case, this means that the wireless radio module 1 via the input / output 10 signals z.
  • wired via a network (such as a wired Ethernet connection or a comparable connection) are supplied by the wireless radio module 1 via the antennas 2 to 4 to terminal or even multiple terminals (such as a PC or a notebook , but also sensors, actuators, etc.) are delivered.
  • signals from these devices can also be sent via radio to the WLAN radio module 1, so that they can be processed there and fed into the network via the output 10.
  • signal converters 11 such as, for example, transmission or reception baluns
  • signal converters 11 which usually carry out a conversion between a symmetrical signal and an asymmetrical signal and / or vice versa.
  • further bandpass filters 12 may be provided in the signal paths in addition to the signal transducers 11 or alone.
  • a filter device is provided in the high-frequency signal path between an antenna and the associated front-end module, which is designed such that it generates high-frequency signals with a frequency according to the IEEE 802.1 1 standard, in particular 2.4 or 5 GHz. lets happen and blocks signals with deviating frequencies or at least significantly suppressed.
  • the filter device 13 is connected in the high-frequency signal path between the antenna 2 and its associated front-end module 5, as are filter devices 14 and 15 between their associated antennas 3, 4 and their front-end modules 6, 7.
  • FIG. 3 shows the mode of operation of the filter devices 13 to 15 provided according to the invention, the level on the Y axis being shown again in FIG. 1 over the same frequency range on the X axis.
  • the elements of the WLAN radio module 1 shown in FIG. 2 are usually arranged on a printed circuit board (possibly also a plurality of printed circuit boards) and accommodated in a corresponding housing.
  • the at least one filter device in particular all filter devices 13 to 15, on the at least one printed circuit board of the WLAN radio module 1 together with the other electronic components that the data processing means (such as the front-end modules 5 to 7), the transmitting and receiving means (for example, the transmitting / receiving module 8) and the input / output means, in particular the interface 9 form, is arranged on the circuit board.
  • At least one of the filter devices 13 to 15, preferably all the filter devices 13 to 15 used, at least one plug-in connection 18 exhibiting module 17 is formed, as shown in a schematic diagram in Figure 4.
  • Figure 4 shows the filter means 13 to 15, wherein it is provided that the module 17 is arranged and fixed to a holder 16, wherein the module 17 via the holder 16 in the wireless radio module 1, in particular its printed circuit board, is arranged and fixed , Again alternatively or additionally, the module 17 is arranged and fixed by means of its connector 18 on the circuit board of the wireless radio module 1.
  • the module 17 which is designed as a filter device chip, without holder 16 via its associated connector 18 (possibly also several connectors) plugged via corresponding connector on the circuit board of the wireless radio module 1 there, so that the high-frequency contact and the Mechanical fixation of position to be done simultaneously with the plugging.
  • the holder 16, on which the module 17 is arranged and fixed is used, so that by means of the holder 16, the module 17 is fixed to the circuit board and decoupled from the high-frequency connection via the at least one connector 18 takes place.
  • the holder 16 may alternatively or additionally be designed as a temperature baffle. The latter variant is particularly advantageous if the WLAN radio module 1 is used in an environment in which high temperature fluctuations (material expansions) or strong vibrations are to be expected. LIST OF REFERENCE NUMBERS

Abstract

The invention relates to an WLAN-radio module (1) comprising at least one antenna (2, 3, 4), at least one interface (10), transmitting and receiving means (5, 6, 7) which operate at a high-frequency and are associated with data processing means of the at least one antenna (2,3 ,4), and input and output means (9) which are associated with the interface (10). According to the invention, the WLAN-radio module (1) is suitable for and designed to be used in an industrial environment, and one filter device (13, 14, 15) is downstream of each of the at least one antennae (2, 3 4), said device being designed to let past high-frequency signals with a frequency in accordance with the IEEE 802.11 standard, in particular 2.4 or 5 GHz, and to block or at least suppress signals with frequencies that differ therefrom.

Description

WLAN-Funkmodul für industrielle Anwendungen  WLAN radio module for industrial applications
Beschreibung description
Die Erfindung betrifft ein WLAN-Funkmodul gemäß den Merkmalen des Oberbegriffes des Patentanspruches 1 . The invention relates to a WLAN radio module according to the features of the preamble of claim 1.
Solche WLAN-Funkmodule sind für Anwendungen im privaten Bereich oder im Bürobereich bekannt. So stellt beispielsweise die Firma AVM WLAN-Router oder Access-Points, die mit einer WLAN-Funktionalität ausgerüstet sind, unter der Bezeichnung „FritzBox" her. In diesen privaten Bereichen herrschen definierte Umgebungsbedingungen, wie z. B. Temperaturen, die im Regelfall 15 Grad nicht unterschreiten bzw. 35 Grad nicht überschreiten. Außerdem gibt es in diesen Bereichen keine Störsignale, die die von dem WLAN-Funkmodul empfangenen hochfrequenten Signale nennenswert stören. Im privaten Bereich sind beispielsweise als Störsignale die elektromagnetischen Ausstrahlungen von Mikrowellen zu nennen, die hinsichtlich ihres Pegels jedoch so gering sind, dass dadurch der Betrieb des WLAN-Funkmodules nicht gestört wird und die eigentlich zu übertragenden Nutzsignale nicht beeinträchtigt und folglich die Performance des WLAN- Funkmodules bei der Verarbeitung der empfangenen Signale nicht oder nicht nennenswert beeinträchtigt wird. Such WLAN radio modules are known for applications in the private sector or in the office sector. For example, the company AVM manufactures WLAN routers or access points that are equipped with WLAN functionality under the name "FritzBox." In these private areas, defined environmental conditions prevail, such as temperatures, which are generally 15 In addition, there are no interfering signals in these areas, which disturb the high-frequency signals received by the WLAN radio module considerably.In the private range are for example as disturbing signals the electromagnetic radiations of microwaves to call, with regard to their However, levels are so low that thereby the operation of the WLAN wireless module is not disturbed and does not affect the actual payload signals to be transmitted and consequently the performance of the WLAN wireless module in the processing of the received signals is not or not significantly affected.
Der Erfindung liegt daher die Aufgabe zugrunde, ein WLAN-Funkmodul derart zu verbessern, dass sein Einsatzbereich deutlich erweitert wird. The invention is therefore based on the object of improving a WLAN radio module in such a way that its field of application is significantly expanded.
Diese Aufgabe ist durch die Merkmale des Patentanspruches 1 gelöst. This object is solved by the features of claim 1.
Erfindungsgemäß ist vorgesehen, dass das WLAN-Funkmodul dazu geeignet und ausgebildet ist, in einer industriellen Umgebung zur Anwendung zu kommen, und der zumindest einen Antenne eine Filtereinrichtung nachgeschaltet ist, die derart ausgestaltet ist, dass sie hochfrequente Signale mit einer Frequenz gemäß dem IEEE 802.1 1 -Standard, insbesondere 2,4 GHz oder 5 GHz, passieren lässt und Signale mit davon abweichenden Frequenzen sperrt oder zumindest unterdrückt According to the invention, it is provided that the WLAN radio module is suitable and designed to be used in an industrial environment, and that at least one antenna is followed by a filter device that is designed to generate high-frequency signals having a frequency according to IEEE 802.1 1 standard, in particular 2.4 GHz or 5 GHz, lets pass and blocks signals with deviating frequencies or at least suppressed
Zu der Filtereinricht kommt noch in Weiterbildung der Erfindung hinzu, dass die elektrischen und elektronischen Bauteile, die die Filtereinrichtung realisieren, dazu geeignet und ausgebildet sind, einen Überspannungsschutz zu bilden. Diese Ausgestaltung hat den Vorteil, dass das Funkmodul und das gesamte Endgerät vor von ausserhalb des Gerätes kommenden Spannungsentladungen geschützt ist, die zur Beeinträchtigung oder Zerstörung des Moduls oder Gerätes führen können. To the filter device is still added in a further development of the invention that the electrical and electronic components that realize the filter device, are suitable and designed to form an overvoltage protection. This embodiment has the advantage that the radio module and the entire terminal is protected from coming from outside the device voltage discharges that can lead to impairment or destruction of the module or device.
Diese beiden vorstehend genannten Einzelmassnahmen haben alleine oder in Kombination den Vorteil, dass das WLAN-Funkmodul auch in größeren Temperaturbereichen und unter rauen Umgebungsbedingungen, wie sie im privaten Bereich oder im Bürobereich nicht gegeben sind, arbeiten kann. These two above-mentioned individual measures alone or in combination have the advantage that the WLAN radio module can also work in larger temperature ranges and under harsh environmental conditions, such as are not present in the private sector or in the office sector.
Das Funkmodul kann in einem erweitertem Temperaturbereich betrieben werden, weil die Auswahl der eingesetzten elektrischen und elektronischen Bauteile in dem Modul sowie das eingesetzte Platinen- und Leitungsmaterial auf diese Temperaturanforderungen ausgelegt sind. Die eingesetzten Antennenstecker sind standfester gegen Erschütterungen und haben einen geringeren Übergangswiderstand bzw. HF-Dämpfung. Der Filter und der Entladungsschutz sorgen dafür, dass das Modul auch im Außenbereich eingesetzt werden kann, ohne zusätzliche Blitzschutzmaßnahmen zu ergreifen. The radio module can be operated in an extended temperature range, because the selection of the electrical and electronic components used in the module as well as the board and line material used are designed for these temperature requirements. The antenna connectors used are more stable against vibrations and have a lower contact resistance or RF attenuation. The filter and the discharge protection ensure that the module can also be used outdoors without taking additional lightning protection measures.
Zusätzlich dazu ist jeder Antenne des WLAN-Funkmodules eine für hohe Frequenzen, insbesondere im Bereich von 2,4 GHz (+/-10%) und/oder 5 GHz (+/- 20%) wirksame Filtereinrichtung zugeordnet, die bewirkt, dass die Signale mit Nutzinhalt in den genannten Frequenzen bzw. Frequenzbereichen die Filtereinrichtung passieren und zu den nachfolgenden Datenverarbeitungsmitteln gelangen können, wohingegen Frequenzen in anderen Frequenzbereichen, die nicht mit dem WLAN-Funkmodul empfangen werden sollen, abgeblockt, d. h. gesperrt oder zumindest deutlich unterdrückt werden. Dies hat den Vorteil, dass nur diejenigen Frequenzen mit den entsprechenden Nutzsignalen zu den Datenverarbeitungsmitteln gelangen, die auch tatsächlich gewünscht sind und verarbeitet werden sollen, so dass die Kapazitäten, insbesondere die Verarbeitungskapazitäten der Datenverarbeitungsmittel, nicht von den Störsignalen beeinträchtigt werden. Dies führt zu einer wesentlich besseren Performance des gesamten WLAN-Funkmodules, so dass dadurch die Schnelligkeit und Zuverlässigkeit der Datenverarbeitung solcher Daten mit Nutzsignalen, die von der zumindest einen Antenne empfangen werden, erhöht wird. In addition, each antenna of the WLAN radio module is associated with a high-frequency filter device, in particular in the range of 2.4 GHz (+/- 10%) and / or 5 GHz (+/- 20%), which causes the Signals with Nutzinhalt in the said frequencies or frequency ranges pass through the filter device and can get to the subsequent data processing means, whereas frequencies in other frequency ranges, which are not to be received with the WLAN radio module, blocked, d. H. be blocked or at least significantly suppressed. This has the advantage that only those frequencies with the corresponding useful signals reach the data processing means which are actually desired and should be processed, so that the capacities, in particular the processing capacities of the data processing means, are not affected by the interference signals. This results in a much better performance of the entire WLAN radio module, thereby increasing the speed and reliability of data processing of such data with payloads received from the at least one antenna.
Ausserdem ist das Funkmodul gegen elektrische Entladungen oder Ströme, die über das Antennenkabel an das Modul gelangen, gesichert und leitet diese ab, so dass keine Schädigung des Moduls und des Gerätes entsteht. In addition, the radio module is protected against electrical discharges or currents which reach the module via the antenna cable and conducts them away, so that no damage is caused to the module and the device.
Weitere Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben, aus denen sich entsprechende Vorteile ergeben. Außerdem werden die Merkmale dieser Unteransprüche im Folgenden näher erläutert und anhand der Figuren beschrieben. In der Figur 1 ist ein Frequenzspektrum dargestellt, wobei auf der X-Achse die Frequenz (hier von 109 MHz bis 6 GHz) und auf der Y-Achse der Pegel der Signale, die sich im Raum befinden und die mittels der Antenne des WLAN-Funkmodules empfangen werden kann, aufgetragen sind. Hierbei ist erkennbar, dass eine Vielzahl von pegelstarken Signalen sich im Raum befinden, die neben dem WLAN-Signal von der zumindest einen Antenne des WLAN-Funkmodules empfangen und dort von deren Datenverarbeitungsmitteln verarbeitet werden können. Aufgrund der Pegelstärke dieser Signale und der Vielzahl der Signale in dem Frequenzbereich führt dies in nachteiliger Weise bei dem Signalspektrum, was in Figur 1 gezeigt ist und üblicherweise in einer industriellen Umgebung vorkommt, zu einer deutlichen Performancereduzierung des WLAN-Funkmodules. Daher sieht die Erfindung Maßnahmen vor, die zu einer Sperrung oder zumindest deutlichen Unterdrückung derjenigen Signale, die nicht im WLAN- oder WIFI-Bereich liegen, vor. Further embodiments of the invention are specified in the subclaims, from which there are corresponding advantages. In addition, the features of these subclaims are explained in more detail below and described with reference to FIGS. FIG. 1 shows a frequency spectrum, wherein the frequency (in this case from 109 MHz to 6 GHz) on the X-axis and the level of the signals located in the space on the Y-axis and that of the WLAN Radio modules can be received, are applied. It can be seen that a plurality of high-level signals are in the room, which can be received in addition to the WLAN signal from the at least one antenna of the WLAN radio module and processed there by their data processing means. Due to the level strength of these signals and the plurality of signals in the frequency domain, this leads disadvantageously to the signal spectrum, which is shown in FIG. 1 and usually occurs in an industrial environment, to a significant performance reduction of the WLAN radio module. Therefore, the invention provides measures to block or at least significant suppression of those signals that are not in the WLAN or WIFI range, before.
Hierzu ist gemäß Figur 2, soweit im Einzelnen dargestellt, ein WLAN-Funkmodul 1 (das insbesondere ein Netzwerkinfrastrukturgerät wie z.B. ein Switch ist) eingesetzt, welches zumindest eine Antenne 2, im Regelfall jedoch mehr als eine Antenne (im Ausführungsbeispiel gemäß Figur 2 sind es drei Antennen 2, 3 und 4 wegen Empfangs- und/oder Sendediversity und/oder MiMo (Multiple In Multiple Out) umfasst. Den hochfrequenten Signalpfaden der jeweiligen Antennen 2 bis 4 sind zur Signalaufbereitung und zur Signalverarbeitung Frontendmodule 5 bis 7 nachgeschaltet, die beispielsweise als fertig konfektionierte und programmierbare Chips auf einer Leiterplatte des WLAN-Funkmodules 1 angeordnet sind. Im einfachsten Fall werden die von den Frontendmodulen 5 bis 7 aufbereiteten Signalen über ein SendeVEmpfangsmodul 8 und entsprechende Ein- und Ausgabemittel 9 einem Ausgang 10 zugeführt. Das bedeutet, dass in an sich bekannter Weise die von den Antennen 2 bis 4 empfangenen hochfrequenten Signale durch die Frontendmodule 5 bis 7 umgewandelt (insbesondere in einen niedrigeren Frequenzbereich transformiert und aufbereitet oder auch nur verstärkt) werden und mittels des SendeVEmpfangsmoduls 8 sowie Ein- und Ausgabemitteln 9, insbesondere einer Mini PCIE-Schnittstelle, dem Ausgang 10 zugeführt werden. Die bisher beschriebenen Mittel sind jedoch nicht nur für die Signaldurchleitung und Verarbeitung in einer Richtung ausgebildet, sondern sind im Regelfall auch bidirektional gestaltet, was bedeutet, dass der Ausgang 10 auch ein Eingang ist, über den dem WLAN-Funkmodul 1 Signale zugeführt werden können, die in dem WLAN- Funkmodul 1 aufbereitet und hochfrequent über die Antennen 2 bis 4 abgestrahlt werden sollen. In einem einfachen Fall bedeutet dies, dass dem WLAN-Funkmodul 1 über den Ein-/Ausgang 10 Signale z. B. kabelgebunden über ein Netzwerk (wie beispielsweise eine kabelgebundene Ethernetverbindung oder eine vergleichbare Verbindung) zugeführt werden, die von dem WLAN-Funkmodul 1 über die Antennen 2 bis 4 an Endgerät oder auch mehrere Endgeräte (wie z. B. ein PC oder ein Notebook, aber auch Sensoren, Aktoren usw.) abgegeben werden. Umgekehrt können von diesen Geräten auch Signale über Funk an das WLAN-Funkmodul 1 gesendet werden, damit sie dort aufbereitet und über den Ausgang 10 in das Netz eingespeist werden können. For this purpose, according to Figure 2, as far as shown in detail, a wireless radio module 1 (which is in particular a network infrastructure device such as a switch) is used, which is at least one antenna 2, but usually more than one antenna (in the embodiment of FIG three antennas 2, 3 and 4 for receiving and / or transmit diversity and / or MiMo (Multiple In Multiple Out) .The high-frequency signal paths of the respective antennas 2 to 4 are followed by signal conditioning and signal processing front-end modules 5 to 7, for example, as ready-made and programmable chips are arranged on a printed circuit board of the wireless radio module 1. In the simplest case, the signals processed by the front-end modules 5 to 7 are fed to an output 10 via a transmission receiving module 8 and corresponding input and output means 9. This means that in known per se, the received from the antennas 2 to 4 high-frequency signals converted by the front end modules 5 to 7 (in particular in a lower Frequency domain transformed and prepared or even amplified) and are supplied to the output 10 by means of the SendeVEmpfangsmoduls 8 and input and output means 9, in particular a Mini PCIE interface. However, the means described so far are not only designed for signal transmission and processing in one direction, but are also designed bidirectionally as a rule, which means that the output 10 is also an input via which the WLAN radio module 1 signals can be supplied, which are processed in the wireless radio module 1 and high-frequency to be emitted via the antennas 2 to 4. In a simple case, this means that the wireless radio module 1 via the input / output 10 signals z. B. wired via a network (such as a wired Ethernet connection or a comparable connection) are supplied by the wireless radio module 1 via the antennas 2 to 4 to terminal or even multiple terminals (such as a PC or a notebook , but also sensors, actuators, etc.) are delivered. Conversely, signals from these devices can also be sent via radio to the WLAN radio module 1, so that they can be processed there and fed into the network via the output 10.
Innerhalb des WLAN-Funkmodules 1 sind üblicherweise Signalwandler 1 1 (wie z. B. Sende- oder Empfangsbaluns) vorhanden, die üblicherweise eine Wandlung zwischen einem symmetrischen Signal zu einem asymmetrischen Signal und/oder umgekehrt vornehmen. Außerdem können in den Signalpfaden zusätzlich zu den Signalwandlern 1 1 oder auch alleine weitere Bandpassfilter 12 vorgesehen sein. Within the WLAN radio module 1, signal converters 11 (such as, for example, transmission or reception baluns) are usually present, which usually carry out a conversion between a symmetrical signal and an asymmetrical signal and / or vice versa. In addition, further bandpass filters 12 may be provided in the signal paths in addition to the signal transducers 11 or alone.
Schließlich ist in erfindungsgemäßer Weise in dem hochfrequenten Signalpfad zwischen einer Antenne und dem zugehörigen Frontendmodul eine Filtereinrichtung vorgesehen, die derart ausgestaltet ist, dass sie hochfrequente Signale mit einer Frequenz gemäß dem IEEE 802.1 1 -Standard, insbesondere 2,4 oder 5 GHz, passieren lässt und Signale mit davon abweichenden Frequenzen sperrt oder zumindest deutlich unterdrückt. So ist bei diesem Ausführungsbeispiel gemäß Figur 2 in dem hochfrequenten Signalpfad zwischen der Antenne 2 und ihrem zugehörigen Frontendmodul 5 die Filtereinrichtung 13 geschaltet, genauso wie Filtereinrichtungen 14 und 15 zwischen ihren zugehörigen Antennen 3, 4 und deren Frontendmodulen 6, 7. Finally, according to the invention, a filter device is provided in the high-frequency signal path between an antenna and the associated front-end module, which is designed such that it generates high-frequency signals with a frequency according to the IEEE 802.1 1 standard, in particular 2.4 or 5 GHz. lets happen and blocks signals with deviating frequencies or at least significantly suppressed. Thus, in this embodiment according to FIG. 2, the filter device 13 is connected in the high-frequency signal path between the antenna 2 and its associated front-end module 5, as are filter devices 14 and 15 between their associated antennas 3, 4 and their front-end modules 6, 7.
Figur 3 zeigt die Wirkungsweise der erfindungsgemäß vorgesehenen Filtereinrichtungen 13 bis 15, wobei entsprechend der Figur 1 wieder über den gleichen Frequenzbereich auf der X-Achse der Pegel auf der Y-Achse dargestellt ist. Hierbei ist deutlich erkennbar, dass mittels der erfindungsgemäßen Filtereinrichtungen die unerwünschten Frequenzen gesperrt bzw. deutlich unterdrückt werden und nur der Frequenzbereich (hier beispielsweise 2,4 GHz) für Nutzsignale offen ist, so dass folglich nur diejenigen Nutzsignale in dem Frequenzbereich zu den Datenverarbeitungsmitteln des WLAN-Funkmodules 1 gelangen, die auch weiterverarbeitet werden sollen. FIG. 3 shows the mode of operation of the filter devices 13 to 15 provided according to the invention, the level on the Y axis being shown again in FIG. 1 over the same frequency range on the X axis. It can be clearly seen that the unwanted frequencies are blocked or clearly suppressed by means of the filter devices according to the invention and only the frequency range (here 2.4 GHz, for example) is open for useful signals, so that only those useful signals in the frequency range are available to the data processing means of the WLAN Radio modules 1 arrive, which are also to be processed.
Die in Figur 2 gezeigten Elemente des WLAN-Funkmodules 1 sind üblicherweise auf einer Leiterplatte (ggf. auch mehrere Leiterplatten) angeordnet und in einem entsprechenden Gehäuse untergebracht. In einer Ausgestaltung der Erfindung ist vorgesehen, dass die zumindest eine Filtereinrichtung, insbesondere alle Filtereinrichtungen 13 bis 15, auf der zumindest einen Leiterplatte des WLAN- Funkmodules 1 zusammen mit den übrigen elektronischen Bauteilen, die die Datenverarbeitungsmittel (wie z. B. die Frontendmodule 5 bis 7), den Sende- und Empfangsmitteln (beispielsweise dem Sende-/Empfangsmodul 8) und den Ein- /Ausgabemitteln, insbesondere der Schnittstelle 9, bilden, auf der Leiterplatte angeordnet ist. Ergänzend oder alternativ dazu ist zumindest eine der Filtereinrichtungen 13 bis 15, vorzugsweise alle eingesetzten Filtereinrichtungen 13 bis 15, als zumindest eine Steckverbindung 18 aufweisendes Modul 17 ausgebildet, wie es in einer Prinzipdarstellung in Figur 4 gezeigt ist. Figur 4 zeigt die Filtereinrichtungen 13 bis 15, wobei hier vorgesehen ist, dass das Modul 17 an einem Halter 16 angeordnet und befestigt ist, wobei das Modul 17 über den Halter 16 in dem WLAN-Funkmodul 1 , insbesondere dessen Leiterplatte, angeordnet und befestigt ist. Wiederum alternativ oder ergänzend dazu ist das Modul 17 mittels seiner Steckverbinder 18 auf der Leiterplatte des WLAN-Funkmodules 1 angeordnet und befestigt. Somit bieten sich mittels der Ausgestaltung des Moduls, wie es in Figur 4 gezeigt ist, verschiedene Möglichkeiten. Entweder wird das Modul 17, das als Filtereinrichtungs-Chip ausgebildet ist, ohne Halter 16 über seinen zugehörigen Steckverbinder 18 (ggf. auch mehrere Steckverbinder) über zugehörige Steckverbinder auf der Leiterplatte des WLAN-Funkmodules 1 dort aufgesteckt, so dass die hochfrequente Kontaktierung und die mechanische Lagefixierung gleichzeitig mit dem Aufstecken erfolgen. Um die Steckverbindung zwischen dem Modul 17 und der Leiterplatte des WLAN-Funkmodules 1 zu entkoppeln, kommt der Halter 16, an dem das Modul 17 angeordnet und befestigt ist zum Einsatz, so dass mittels des Halters 16 das Modul 17 an der Leiterplatte befestigt ist und entkoppelt davon die hochfrequente Verbindung über den zumindest einen Steckverbinder 18 erfolgt. Der Halter 16 kann alternativ oder ergänzend auch als Temperaturleitblech ausgebildet sein. Die letztgenannte Variante ist insbesondere dann von großem Vorteil, wenn das WLAN- Funkmodul 1 in einer Umgebung eingesetzt wird, in der mit hohen Temperaturschwankungen (Materialausdehnungen) bzw. starken Vibrationen zu rechnen ist. Bezugszeichenliste: The elements of the WLAN radio module 1 shown in FIG. 2 are usually arranged on a printed circuit board (possibly also a plurality of printed circuit boards) and accommodated in a corresponding housing. In one embodiment of the invention, it is provided that the at least one filter device, in particular all filter devices 13 to 15, on the at least one printed circuit board of the WLAN radio module 1 together with the other electronic components that the data processing means (such as the front-end modules 5 to 7), the transmitting and receiving means (for example, the transmitting / receiving module 8) and the input / output means, in particular the interface 9 form, is arranged on the circuit board. Additionally or alternatively, at least one of the filter devices 13 to 15, preferably all the filter devices 13 to 15 used, at least one plug-in connection 18 exhibiting module 17 is formed, as shown in a schematic diagram in Figure 4. Figure 4 shows the filter means 13 to 15, wherein it is provided that the module 17 is arranged and fixed to a holder 16, wherein the module 17 via the holder 16 in the wireless radio module 1, in particular its printed circuit board, is arranged and fixed , Again alternatively or additionally, the module 17 is arranged and fixed by means of its connector 18 on the circuit board of the wireless radio module 1. Thus, by means of the design of the module, as shown in Figure 4, various possibilities. Either the module 17, which is designed as a filter device chip, without holder 16 via its associated connector 18 (possibly also several connectors) plugged via corresponding connector on the circuit board of the wireless radio module 1 there, so that the high-frequency contact and the Mechanical fixation of position to be done simultaneously with the plugging. To decouple the connector between the module 17 and the circuit board of the wireless radio module 1, the holder 16, on which the module 17 is arranged and fixed is used, so that by means of the holder 16, the module 17 is fixed to the circuit board and decoupled from the high-frequency connection via the at least one connector 18 takes place. The holder 16 may alternatively or additionally be designed as a temperature baffle. The latter variant is particularly advantageous if the WLAN radio module 1 is used in an environment in which high temperature fluctuations (material expansions) or strong vibrations are to be expected. LIST OF REFERENCE NUMBERS
1 . WLAN-Modul 1 . WLAN module
2. Antenne  2. Antenna
3. Antenne  3rd antenna
4. Antenne  4. Antenna
5. Frontendmodul  5. Frontend module
6. Frontendmodul  6. Front end module
7. Frontendmodul  7. Frontend module
8. SendeVEmpfangsmodul  8. Transceiver module
9. Ein-/Ausgabemittel  9. input / output means
10. Schnittstelle  10. Interface
1 1 . Signalwandler  1 1. signal converter
12. Bandpassfilter  12. Bandpass filter
13. Filtereinrichtung  13. Filter device
14. Filtereinrichtung  14. Filter device
15. Filtereinrichtung  15. Filter device
16. Halter  16. Holder
17. Modul, insbesondere Filtereinrichtungs-Chip 17th module, in particular filter device chip
18. Steckverbinder 18. Connector

Claims

Patentansprüche: claims:
1 . WLAN-Funkmodul (1 ) mit zumindest einer Antenne (2, 3, 4), zumindest einer Schnittstelle (10) sowie Datenverarbeitungsmitteln der zumindest einen Antenne (2, 3, 4) zugeordneten hochfrequenzmäßig wirkenden Sende- und Empfangsmitteln (5, 6, 7) und der Schnittstelle (10) zugeordnete Ein- und Ausgabemittel (9), dadurch gekennzeichnet, dass das WLAN-Funkmodul (1 ) dazu geeignet und ausgebildet ist, in einer industriellen Umgebung zur Anwendung zu kommen, und der zumindest einen Antenne (2, 3, 4) jeweils eine Filtereinrichtung (13, 14, 15) nachgeschaltet ist, die derart ausgestaltet ist, dass sie hochfrequente Signale mit einer Frequenz gemäß dem IEEE 802.1 1 -Standard, insbesondere 2,4 oder 5 GHz, passieren lässt und Signale mit davon abweichenden Frequenzen sperrt oder zumindest unterdrückt. 1 . WLAN radio module (1) having at least one antenna (2, 3, 4), at least one interface (10) and data processing means of the at least one antenna (2, 3, 4) associated high-frequency transmitting and receiving means (5, 6, 7 ) and the interface (10) associated input and output means (9), characterized in that the WLAN radio module (1) is adapted and adapted to be used in an industrial environment for the application, and the at least one antenna (2, 3, 4) is in each case downstream of a filter device (13, 14, 15) which is designed such that it can pass high-frequency signals having a frequency according to the IEEE 802.1 1 standard, in particular 2.4 or 5 GHz, and signals Deviating frequencies blocks or at least suppressed.
2. WLAN-Funkmodul (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass die elektrischen und elektronischen Bauteile, die die Filtereinrichtung realisieren, dazu geeignet und ausgebildet sind, einen Überspannungsschutz zu bilden. 2. WLAN radio module (1) according to claim 1, characterized in that the electrical and electronic components which realize the filter device, are suitable and adapted to form an overvoltage protection.
3. WLAN-Funkmodul (1 ) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die zumindest eine Filtereinrichtung (13, 14, 15) auf einer Leiterplatte des WLAN- Funkmodules (1 ) zusammen mit den Datenverarbeitungsmitteln, den Sende- und Empfangsmitteln (5, 6, 7) und den Ein-/Ausgabemitteln (9) angeordnet ist. 3. WLAN radio module (1) according to claim 1 or 2, characterized in that the at least one filter device (13, 14, 15) on a printed circuit board of the WLAN radio module (1) together with the data processing means, the transmitting and receiving means ( 5, 6, 7) and the input / output means (9) is arranged.
4. WLAN-Funkmodul (1 ) nach Anspruch 1 , 2 oder 3, dadurch gekennzeichnet, dass die zumindest eine Filtereinrichtung (13, 14, 15) als zumindest eine Steckverbindung (18) aufweisendes Modul (17) ausgebildet ist. 4. WLAN radio module (1) according to claim 1, 2 or 3, characterized in that the at least one filter device (13, 14, 15) as at least one plug-in connection (18) exhibiting module (17) is formed.
5. WLAN-Funkmodul (1 ) nach Anspruch 1 , 2, 3 oder 4, dadurch gekennzeichnet, dass das Modul (17) an einem Halter (16) angeordnet und befestigt ist, wobei das Modul (17) über den Halter (16) in dem WLAN-Funkmodul (1 ), insbesondere dessen Leiterplatte, angeordnet und befestigt ist. 5. WLAN radio module (1) according to claim 1, 2, 3 or 4, characterized in that the module (17) on a holder (16) is arranged and fixed, wherein the module (17) via the holder (16) in the wireless radio module (1), in particular its printed circuit board, is arranged and fixed.
6. WLAN-Funkmodul (1 ) nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass das Modul (17) mittels des zumindest einen Steckverbinders (18) auf einer Leiterplatte des WLAN-Funkmodules (1 ) angeordnet und befestigt ist. 6. WLAN radio module (1) according to claim 4 or 5, characterized in that the module (17) by means of at least one connector (18) on a printed circuit board of the wireless radio module (1) is arranged and fixed.
PCT/EP2011/068331 2010-11-23 2011-10-20 Wlan-radio module for industrial applications WO2012069259A1 (en)

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