EP1685624A1 - Amplificateur d'antenne - Google Patents

Amplificateur d'antenne

Info

Publication number
EP1685624A1
EP1685624A1 EP04787160A EP04787160A EP1685624A1 EP 1685624 A1 EP1685624 A1 EP 1685624A1 EP 04787160 A EP04787160 A EP 04787160A EP 04787160 A EP04787160 A EP 04787160A EP 1685624 A1 EP1685624 A1 EP 1685624A1
Authority
EP
European Patent Office
Prior art keywords
antenna amplifier
receiver
signal
antenna
output
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP04787160A
Other languages
German (de)
English (en)
Inventor
Gerhard Kottschlag
Jens Passoke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1685624A1 publication Critical patent/EP1685624A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
    • 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
    • H04B1/16—Circuits
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line

Definitions

  • the invention is based on an antenna amplifier with the generic features of claim 1 and a receiver with the generic features of claim 10.
  • the signal path of a radio receiving system in particular in motor vehicles, often consists of an antenna, an impedance matching and / or amplifier and a receiving part.
  • an impedance matching In the element for impedance matching, which is usually close to the
  • the signal picked up by the antenna is actively or passively converted to a new nominal impedance.
  • a broadband adaptation to the subsequent element, here the receiver is achieved in the signal path.
  • An active impedance matching ie an element for impedance matching, which also serves for amplification, enables the simultaneous amplification of the
  • Antenna recorded signal for example to compensate for losses in the antenna line between the active impedance matching and the receiver.
  • the element for impedance matching and possibly amplification is referred to below as an antenna amplifier.
  • the reception quality of the desired user channel is severely impaired.
  • the object of the present invention is therefore to improve the interference to useful signal ratio, in particular in situations in which an interference signal with a high level is present.
  • an antenna amplifier according to claim 1 a receiver according to claim 10 and a receiving system according to claim 12.
  • a narrow-band filter is arranged between the input and the means for signal level adjustment, the center frequency of the filter passband being changeable and tunable to the receiving channel of the receiver.
  • Antenna amplifier to control a narrow-band filter in such a way that the impairment of the useful channel is largely avoided.
  • the filter is arranged in the signal path in front of the active amplifier element of the antenna amplifier.
  • the pass band of the narrow-band filter is set to the frequency of the desired user channel. This makes the signal level the unwanted
  • the pass frequency of the filter can be tuned by a tuning signal generated by the receiver and applied to a control connection of the antenna amplifier. The hamper conduction of the information required for the filter for tuning is therefore carried out via separate lines.
  • the pass frequency of the filter can be tuned by a tuning signal generated by the receiver at the output of the antenna amplifier.
  • the tuning signal present at the output of the antenna amplifier and evaluated in the antenna amplifier can be a DC voltage or an analog, for example amplitude, frequency or pulse width modulated signal or a digital data stream.
  • the voltage supply of the antenna amplifier, which can also use the antenna cable, must be taken into account.
  • the antenna amplifier preferably comprises a device for decomposing or filtering out the signal components at the output. In one development, a supply voltage for the is at the output of the antenna amplifier
  • Antenna amplifier can be put on.
  • the useful signal of the antenna adapted or amplified in impedance, the tuning signal and the supply voltage are thus transmitted in this case via the same antenna line.
  • a digital data stream can also be transmitted by switching the supply voltage on and off or by changing the voltage in accordance with the digital coding.
  • Antenna amplifiers e.g. a capacitor or a coil supplies the antenna amplifier for the duration of the supply voltage shutdown.
  • a suitable device must be installed in the antenna amplifier to break down the signal components, such as radio signals, control information and / or
  • the absorption information can be derived from the oscillator voltage or the tuning voltage of the filter means of the front end. It is also conceivable to generate the required information with the aid of an additional digital control module or one already provided in the receiver for other tasks.
  • the device for decomposing the signal components at the output further comprises a storage unit for storing tuning information.
  • Capacitors to different voltage values or as digital information in a control module. This is particularly advantageous if the reception frequency is to be changed quickly and / or for a short time, for example in the case of so-called RDS jumps, and the transmission of the decay information via the antenna line is very slow in relation to this.
  • the reactions to control signals take place at defined events or times. This can be done by synchronization to external events, such as an incoming control signal, or internal events, such as exceeding a specified temperature value, are triggered.
  • the implementation of a time reference in the antenna amplifier is particularly advantageous, so that the execution can take place at a predetermined point in time without triggering again by the receiver. This is another suitable alternative for synchronously realizing short RDS jumps in the antenna amplifier and in the receiver.
  • a further development of the antenna amplifier provides that further control signals can be present at a control connection or at the output.
  • other data can also be sent from the receiver to the
  • Antenna amplifiers are transmitted to influence its operating mode.
  • the signal level measured in the receiver can be used to set the amplifier factor in the antenna amplifier, or the selected reception band activates different amplifier elements, for example one for medium-wave or one for ultra-short-wave reception.
  • this can include a means for generating a return signal present at the output.
  • This return channel can be used as an acknowledgment of receipt for switching commands, transmission of error states such as temperature, current monitoring and the like or other information.
  • the means for generating the tuning signal and / or further control signal comprise a module, the input of which is connected to a microcontroller or an internal tuning signal and the output of which the tuning signal is present in a form which is available for transmission an antenna amplifier according to the invention is suitable.
  • the signal conditioning for frequency tuning of the antenna amplifier can alternatively be integrated in the front-end IC or in the microcontroller.
  • the receiver can have means for recording and / or evaluating information signals generated by the antenna amplifier and in addition to the Radio signals are transmitted include. This can be, for example, information about the signal level, information about the operating state of the antenna amplifier or the like.
  • Receiving system of a motor vehicle with a receiver and an antenna amplifier according to one of the claims directed to an antenna amplifier.
  • the antenna amplifier according to the invention, the receiver according to the invention and the reception system according to the invention can also be used for other radio standards and other stationary and mobile reception systems. These can be, for example, mobile reception devices installed in airplanes, ships or other vehicles or stationary reception systems or portable mobile radio devices or the like.
  • FIG. 1 shows a block diagram of an antenna amplifier according to the invention and a receiver according to the invention with transmission of front end information
  • FIG. 2 shows a block diagram of an antenna amplifier according to the invention and a receiver according to the invention with transmission of tuning information and signal level information.
  • a receiver 120 comprises filter means 121, which divide the signal path into an FM band and an AM band, the FM filter only allowing a part of the FM band to pass through.
  • the center frequency of this subrange can be changed by a tuning voltage 145.
  • the actual tuning to an individual reception frequency takes place by mixing the reception area with an oscillator signal 141 whose frequency can be changed and then channel filtering the intermediate frequency signal by a filter 125.
  • a PLL synthesizer 144 generates a phase comparison of a reference oscillator 142 with the output signal 141 of the mixing oscillator 140 an oscillator tuning voltage 145, by means of which the mixing oscillator 140 is reverberated at a suitable frequency, by means of which the received channel set is mixed down to the intermediate frequency can be.
  • a control module 150 generates a tuning signal 151 from the oscillator tuning signal 145.
  • the tuning signal 151 which contains information about the selected receiving channel or the receiving frequency, is applied to the input 104 of the receiver 120, as a result of which the tuning signal is sent via the antenna line 103 to the output 102 of the antenna amplifier 110 arrives.
  • the antenna amplifier 110 comprises an input 101, to which an antenna 100 is connected. Furthermore, the antenna amplifier 110 comprises a narrow-band filler 111 and an active element 112 for impedance matching and / or signal amplification.
  • the active element is a signal conditioner, which is the
  • the level in the amplifier 112 is regulated or limited.
  • a filter 113 for the AM band and an amplifier 114 for the AM band are provided.
  • the narrow band filter 111 for the FM band is a controllable filter, i. H. the pass frequency can be shifted in the desired reception frequency range.
  • a device 115 is used to filter out the tuning information from the signals which are routed via the antenna line.
  • the tuning information could be provided by a device for decomposing the signal components, such as radio signals, anti-virus information and power supply for the active parts of the antenna amplifier 110.
  • the device 115 is only shown for the signal path of the FM band; the same element could be provided for the signal path of the AM band if its filter 113 were also designed to be narrowband and slimmable.
  • the device 115 evaluates that present at the output 102 of the antenna amplifier
  • the assembly 150 converts signals of the PLL synthesizer 144 into an analog or digital tuning signal, which is connected to the input 104 of the receiver 120, reaches the output 102 of the antenna amplifier 110 and with which the pass frequency of the filter 111 is raised the receiving frequency of the receiver 120 is tuned.
  • the output 102 can be used to supply a z. B. DC voltage signal for the voltage supply of the active components of the antenna amplifier 110 are used.
  • the device 115 may further comprise means which can buffer one or more settings, e.g. B. in the form of a charge of several capacitors to different voltage values or as digital information in a control module.
  • the temporarily stored information can in particular be information on one or more pass frequencies of the filter 111, so that it is easy to switch back and forth between different pass frequencies.
  • FIG. 1 A block diagram of a further exemplary embodiment according to the invention is shown in FIG. Compared to the first example, the following changes and extensions are planned:
  • a level detector 260 determines the signal strength of the
  • the microcontroller now determines whether the gain of the antenna amplifier should be reduced due to a high signal level and supplies the relevant information and the set reception frequency to the module 250. Both information are now transmitted in a suitable format the antenna line 203 transmits to the antenna amplifier 210. The voting information is filtered out in module 215. The gain to be set is extracted by a module 216 and then controls amplifiers 212 and / or 214.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Circuits Of Receivers In General (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Noise Elimination (AREA)

Abstract

L'invention concerne un amplificateur d'antenne (110) comportant au moins une entrée (101) pour le raccordement d'une antenne (100) et au moins une sortie (102) pour le raccordement d'un récepteur (120), ainsi qu'au moins un dispositif pour adapter le niveau des signaux (112,115) entre l'entrée (101) et la sortie (102). L'invention vise à améliorer le rapport entre les signaux utiles et les signes parasites, notamment dans des situations où un signal parasite a un niveau élevé. A cet effet, entre l'entrée (101) et le dispositif d'adaptation du niveau des signaux (112,115) est disposé un filtre à bande étroite (111), la fréquence médiane de la bande passante du filtre pouvant être modifiée et adaptée au canal de réception du récepteur (120).
EP04787160A 2003-11-08 2004-09-17 Amplificateur d'antenne Ceased EP1685624A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10352290A DE10352290A1 (de) 2003-11-08 2003-11-08 Antennenverstärker
PCT/EP2004/052220 WO2005045996A1 (fr) 2003-11-08 2004-09-17 Amplificateur d'antenne

Publications (1)

Publication Number Publication Date
EP1685624A1 true EP1685624A1 (fr) 2006-08-02

Family

ID=34530180

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04787160A Ceased EP1685624A1 (fr) 2003-11-08 2004-09-17 Amplificateur d'antenne

Country Status (7)

Country Link
US (1) US20070222524A1 (fr)
EP (1) EP1685624A1 (fr)
JP (1) JP2007535207A (fr)
CN (1) CN1875523A (fr)
BR (1) BRPI0416293A (fr)
DE (1) DE10352290A1 (fr)
WO (1) WO2005045996A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008048986B4 (de) 2008-09-25 2019-03-14 Atmel Corp. Antennenverstärker und Empfangssystem
JP4759610B2 (ja) * 2008-12-01 2011-08-31 株式会社豊田自動織機 非接触電力伝送装置
GB2490145A (en) * 2011-04-20 2012-10-24 Frontier Silicon Ltd A DAB (RTM) receiver module, including tuneable impedance matching circuitry, for retrofitting DAB radio to a car
FI129199B (en) * 2020-06-24 2021-09-15 Elisa Oyj Automatic evaluation of the need for an antenna amplifier

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4138654A (en) * 1977-09-12 1979-02-06 Harris Corporation Digitally tuned circuit including switching of bank capacitors between plural tuned circuits
US4531232A (en) * 1982-03-04 1985-07-23 Nippondenso Co., Ltd. Radio receiver apparatus for vehicle
EP0367555A3 (fr) * 1988-11-02 1991-10-30 Nippon Sheet Glass Co., Ltd. Système de réception sur vitre
FI87415C (fi) * 1990-06-08 1992-12-28 Telenokia Oy Apparatur foer detektering av ett fel i en foerstaerkare som aer foerdubblad med hetberedskapsmetoden
US5038405A (en) * 1990-06-14 1991-08-06 Karr Lawrence J Tunable antenna apparatus and method for use with superheterodyne receivers
JPH04111540A (ja) * 1990-08-30 1992-04-13 Matsushita Electric Ind Co Ltd ダブルスーパチューナ
FI98107C (fi) * 1993-06-11 1997-04-10 Nokia Telecommunications Oy Laitteisto hälytystietojen siirtämiseksi antennivahvistinyksiköstä
JPH10233707A (ja) * 1997-02-20 1998-09-02 Sony Corp 短波受信用の外部アンテナ装置
US5898402A (en) * 1997-05-30 1999-04-27 Federal Communications Commission/Compliance And Information Bureau/Equipment Development Group Wide aperature radio frequency data acquisition system
DE19934744A1 (de) * 1999-07-23 2001-02-08 Temic Telefunken Hochfrequenzt Abstimmbarer AM/FM-Antennenverstärker
US6917328B2 (en) * 2001-11-13 2005-07-12 Rosum Corporation Radio frequency device for receiving TV signals and GPS satellite signals and performing positioning
DE10211341A1 (de) * 2002-03-14 2003-10-02 Kathrein Werke Kg Diversity-Antennensystem für bewegte Fahrzeuge

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005045996A1 *

Also Published As

Publication number Publication date
BRPI0416293A (pt) 2007-01-23
CN1875523A (zh) 2006-12-06
JP2007535207A (ja) 2007-11-29
WO2005045996A1 (fr) 2005-05-19
US20070222524A1 (en) 2007-09-27
DE10352290A1 (de) 2005-06-02

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