WO2012069259A1 - Module radio wlan pour applications industrielles - Google Patents

Module radio wlan pour applications industrielles 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
Authority
WO
WIPO (PCT)
Prior art keywords
radio module
module
wlan radio
wlan
frequency
Prior art date
Application number
PCT/EP2011/068331
Other languages
German (de)
English (en)
Inventor
Olaf Schilperoort
Nidal Fawaz
Original Assignee
Hirschmann Automation And Control Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hirschmann Automation And Control Gmbh filed Critical Hirschmann Automation And Control Gmbh
Publication of WO2012069259A1 publication Critical patent/WO2012069259A1/fr

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)

Abstract

L'invention concerne un module radio WLAN (1) comportant au moins une antenne (2, 3, 4), au moins une interface (10) des moyens d'émission et de réception haute fréquence (5, 6, 7) associés aux moyens de traitement des données de l'antenne ou des antennes (2, 3, 4), ainsi que des moyens d'entrée et de sortie (9) associés à l'interface (10). Selon l'invention, le module radio WLAN (1) est conçu et configuré pour être utilisé dans un environnement industriel et un dispositif de filtrage (13, 14, 15) est monté en aval de l'antenne ou des antennes (2, 3, 4) et configuré de manière à laisser passer les signaux haute fréquence dont la fréquence est conforme à la norme IEEE 802.11, en particulier de 2,4 ou 5 GHz, et à bloquer ou du moins atténuer les signaux dont la fréquence diverge de ces valeurs.
PCT/EP2011/068331 2010-11-23 2011-10-20 Module radio wlan pour applications industrielles WO2012069259A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010052046 DE102010052046A1 (de) 2010-11-23 2010-11-23 WLAN-Funkmodul für industrielle Anwendungen
DE102010052046.2 2010-11-23

Publications (1)

Publication Number Publication Date
WO2012069259A1 true WO2012069259A1 (fr) 2012-05-31

Family

ID=45445646

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/068331 WO2012069259A1 (fr) 2010-11-23 2011-10-20 Module radio wlan pour applications industrielles

Country Status (2)

Country Link
DE (1) DE102010052046A1 (fr)
WO (1) WO2012069259A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3431537A1 (de) * 1984-08-28 1986-03-13 Gebhard 5880 Lüdenscheid Auth Ueberspannungsfilter fuer antennensteckdosen
US5898904A (en) * 1995-10-13 1999-04-27 General Wireless Communications, Inc. Two-way wireless data network having a transmitter having a range greater than portions of the service areas
US20040264095A1 (en) * 2001-09-28 2004-12-30 Christian Block Circuit arrangement, switching module comprising said circuit arrangement and use of said switching module
US7245882B1 (en) * 2003-07-17 2007-07-17 Atheros Communications, Inc. Method and apparatus for a signal selective RF transceiver system
US20070264957A1 (en) * 2002-06-17 2007-11-15 Broadcom Corporation, A California Corporation Electrostatic protection circuit with impedance matching for radio frequency integrated circuits
WO2010070401A1 (fr) * 2008-12-21 2010-06-24 Laird Technologies Ab Ensembles antennes à utiliser avec des dispositifs de communication portables

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7068987B2 (en) * 2000-10-02 2006-06-27 Conexant, Inc. Packet acquisition and channel tracking for a wireless communication device configured in a zero intermediate frequency architecture
US7155178B2 (en) * 2004-01-29 2006-12-26 Mediatek Inc. Circuit system for wireless communications
CN1930776B (zh) * 2004-03-16 2012-02-01 日立金属株式会社 高频电路以及高频部件

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3431537A1 (de) * 1984-08-28 1986-03-13 Gebhard 5880 Lüdenscheid Auth Ueberspannungsfilter fuer antennensteckdosen
US5898904A (en) * 1995-10-13 1999-04-27 General Wireless Communications, Inc. Two-way wireless data network having a transmitter having a range greater than portions of the service areas
US20040264095A1 (en) * 2001-09-28 2004-12-30 Christian Block Circuit arrangement, switching module comprising said circuit arrangement and use of said switching module
US20070264957A1 (en) * 2002-06-17 2007-11-15 Broadcom Corporation, A California Corporation Electrostatic protection circuit with impedance matching for radio frequency integrated circuits
US7245882B1 (en) * 2003-07-17 2007-07-17 Atheros Communications, Inc. Method and apparatus for a signal selective RF transceiver system
WO2010070401A1 (fr) * 2008-12-21 2010-06-24 Laird Technologies Ab Ensembles antennes à utiliser avec des dispositifs de communication portables

Also Published As

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DE102010052046A1 (de) 2012-05-24

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