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DE2830047C2 - Large signal-proof car antenna amplifier - Google Patents

Large signal-proof car antenna amplifier

Info

Publication number
DE2830047C2
DE2830047C2 DE2830047A DE2830047A DE2830047C2 DE 2830047 C2 DE2830047 C2 DE 2830047C2 DE 2830047 A DE2830047 A DE 2830047A DE 2830047 A DE2830047 A DE 2830047A DE 2830047 C2 DE2830047 C2 DE 2830047C2
Authority
DE
Germany
Prior art keywords
car antenna
broadband
antenna amplifier
amplifier
antenna
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.)
Expired
Application number
DE2830047A
Other languages
German (de)
Other versions
DE2830047A1 (en
Inventor
Gerhard 8200 Rosenheim Krause
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE2830047A priority Critical patent/DE2830047C2/en
Priority to IT23897/79A priority patent/IT1121962B/en
Priority to FR7917333A priority patent/FR2431779A1/en
Priority to GB7923615A priority patent/GB2026798A/en
Publication of DE2830047A1 publication Critical patent/DE2830047A1/en
Application granted granted Critical
Publication of DE2830047C2 publication Critical patent/DE2830047C2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present
    • H03G3/345—Muting during a short period of time when noise pulses are detected, i.e. blanking
    • 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
    • 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

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)
  • Amplifiers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Near-Field Transmission Systems (AREA)

Description

Die Erfindung betrifft einen Autoantennenverstärker nach dem Oberbegriff von Anspruch 1.The invention relates to a car antenna amplifier according to the preamble of claim 1.

Aus Rundfunktechnische Mitteilungen, Jahrgang 21 (1977), Heft 6, Seiten 253 bis 260, ist eine aktive Antenne als Zweibereichsantenne mit Bandfilter-Charakteristik im UKW-Bereich bekanntFrom Rundfunktechnische Mitteilungen, Volume 21 (1977), Issue 6, pages 253 to 260, is an active antenna known as a dual-range antenna with band filter characteristics in the VHF range

Breitbandige Verstärker, die direkt am Fußpunkt einer Fahrzeugantenne vorgesehen sind (aktive Antenne), liefern bekantlich bessere Störabstände als Anordnungen, bei denen die Antenne über ein Kabel mit dem räumlich entfernten Empfänger verbunden wird.Broadband amplifiers that are provided directly at the base of a vehicle antenna (active antenna), known to provide better signal-to-noise ratios than arrangements in which the antenna is connected to the spatially distant receiver is connected.

Es hat sich jedoch gezeigt, daß aktive Antennen eine unzureichende Großsignalfestigkeit besitzen. Es ist nämlich möglich, daß ein in der Nähe befindlicher Sender so viele Störlinien erzeugt, daß ein Empfang anderer Sender nicht mehr gewährleistet ist Schließlich können auch die Modulationsverzerrungen des stark einfallenden Senders so groß werden, daß auch dieser kein brauchbares Signal mehr abgeben kann.However, it has been shown that active antennas have insufficient signal strength. It is possible that there is a transmitter in the vicinity so many interference lines generated that reception of other transmitters is no longer guaranteed also the modulation distortion of the strongly incident Transmitter become so large that it can no longer emit a usable signal either.

Es ist daher Aufgabe der Erfindung, Maßnahmen anzugeben, die die Auswirkung einer Großsignalstörung bei Autoantennenverstärkern für eine Fahrzeugantenne ίο einschränken, wodurch infoige möglichst weniger Störlinien und infolge geringer Modulationsverzerrungen ein einwandfreier Empfang gewährleistet istIt is therefore the object of the invention to specify measures the effects of large-signal interference in car antenna amplifiers for a vehicle antenna ίο restrict, whereby infoige as few interference lines as possible and due to the low modulation distortion, perfect reception is guaranteed

Diese Aufgabe wird bei einem Autoantennenverstärker nach dem Oberbegriff des Anspruchs 1 erfindungsgemäß durch die im Kennzeichen des Patentanspruchs 1 angegebenen Merkmale gelöstThis object is achieved according to the invention in a car antenna amplifier according to the preamble of claim 1 solved by the features specified in the characterizing part of claim 1

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen beschrieben.Advantageous embodiments of the invention are described in the subclaims.

Nachfolgend wird die Erfindung anhand der Zeichnung näher erläutertThe invention is explained in more detail below with reference to the drawing

Die einzige Figur zeigt ein Ausführungsbeispiel des erfindungsgemäßen Autoantennenverstärkers.The single figure shows an embodiment of the car antenna amplifier according to the invention.

Der UKW-Bereich und/oder der AM-Bereich wird durch Bandpässe 1, die der Antenne A nachgeschaltet sind, in wenigstens zwei Teilbereiche unterteilt (vgl. die Figur, in der die einzelnen Teilbereiche in MHz angegeben sind). Jeder Teilbereich wird in einem Breitbandverstärker 2 separat verstärkt Am Ausgang werden alle Kanäle wieder in einem Sammelpunkt 4 zusammengeführt Die einzelnen Breitbandverstärker sind in vorteilhafter Weise auf einem einzigen Halbleiterkörper angeordnet Bandpaßfilter 3 am Ausgang der Bandpaßverstärker 2 sind bei geeigneter Dimensionierung der Breitbandverstärker 2 nicht unbedingt erforderlich und daher lediglich strichliert dargestelltThe VHF range and / or the AM range is subdivided into at least two sub-areas by bandpass filters 1, which are connected downstream of the antenna A (cf. the figure in which the individual sub-areas are indicated in MHz). Each sub-area is amplified separately in a broadband amplifier 2. At the output, all channels are brought together again in a collecting point 4 therefore only shown in dashed lines

Stört beim Ausführungsbeispiel nach der Figur ein stark einfallender UKW-Sender einen der UKW-Kanäle, dann stehet; für den Empfang immer noch drei andere Kanäle zur Verfügung.In the embodiment according to the figure, if a strongly incident VHF transmitter interferes with one of the VHF channels, then stand; three other channels are still available for reception.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (3)

Patentansprache:Patent address: 1. Autoantennenverstärker für eine Fahrzeugantenne, an deren Fußpunkt direkt eine Breitband-Verstärkereinheit mit einer Bandfiltercharakteristik angebracht ist, dadurch gekennzeichnet, daß die Breitband-Verstärkereinheit aus wenigstens zwei, bestimmten Frequenzbereichen zugeordneten Bandpaßfiltern (1) und aus diesen jeweils nachgeschalteten Breitbandverstärkern (2) besteht, um Auswirkungen einer Großsignalstörung einzuschränken. 1. Car antenna amplifier for a vehicle antenna with a broadband amplifier unit directly at its base is attached with a band filter characteristic, characterized in that that the broadband amplifier unit is assigned from at least two, specific frequency ranges Bandpass filters (1) and these broadband amplifiers (2) connected downstream in each case Limit the effects of large-signal interference. 2. Autoantennenverstärker nach Anspruch 1, dadurch gekennzeichnet, daß die Breitbandverstärker (2) auf einem Halbleiterkörper integriert ausgeführt sind.2. Car antenna amplifier according to claim 1, characterized in that the broadband amplifier (2) are implemented in an integrated manner on a semiconductor body. 3. Autoantennenverstärker nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß den Breitbandverstärkern (2) jeweils ein weiteres Bandpaßfilter (3) nachgeschaltet ist3. Car antenna amplifier according to claim 1 or 2, characterized in that the broadband amplifiers (2) a further bandpass filter (3) is connected downstream
DE2830047A 1978-07-07 1978-07-07 Large signal-proof car antenna amplifier Expired DE2830047C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE2830047A DE2830047C2 (en) 1978-07-07 1978-07-07 Large signal-proof car antenna amplifier
IT23897/79A IT1121962B (en) 1978-07-07 1979-06-27 ANTENNA AMPLIFIER FOR CARS, SAFE FOR HIGH-POWER SIGNALS
FR7917333A FR2431779A1 (en) 1978-07-07 1979-07-04 AERIAL RADIO AMPLIFIER CAPABLE OF PROCESSING STRONG SIGNALS
GB7923615A GB2026798A (en) 1978-07-07 1979-07-06 Vehicle antenna amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2830047A DE2830047C2 (en) 1978-07-07 1978-07-07 Large signal-proof car antenna amplifier

Publications (2)

Publication Number Publication Date
DE2830047A1 DE2830047A1 (en) 1980-01-17
DE2830047C2 true DE2830047C2 (en) 1982-10-21

Family

ID=6043863

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2830047A Expired DE2830047C2 (en) 1978-07-07 1978-07-07 Large signal-proof car antenna amplifier

Country Status (4)

Country Link
DE (1) DE2830047C2 (en)
FR (1) FR2431779A1 (en)
GB (1) GB2026798A (en)
IT (1) IT1121962B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI106661B (en) * 1997-12-09 2001-03-15 Nokia Mobile Phones Ltd Procedure for selecting the frequency range of radio telephones operating in multiple frequency ranges and mobile telephones
IT1307463B1 (en) * 1999-06-30 2001-11-06 Calearo S R L MULTIFUNCTION ANTENNA FOR VEHICLES
DE19934867A1 (en) * 1999-07-24 2001-02-15 Bosch Gmbh Robert Glass adhesive antenna
US6868261B2 (en) 2001-09-05 2005-03-15 Broadcom Corporation Transmitter method, apparatus, and frequency plan for minimizing spurious energy
DE102004039396A1 (en) * 2004-08-13 2006-02-23 BSH Bosch und Siemens Hausgeräte GmbH Circuit arrangement for the suppression of interference signals in the reception branch of a modem of a household appliance
RU2429559C2 (en) * 2009-09-21 2011-09-20 Федеральное государственное унитарное предприятие Омский научно-исследовательский институт приборостроения Frequency-selective system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB478605A (en) * 1935-10-09 1938-01-21 Siemens App Und Maschinen Gmbh Improvements in and relating to circuit arrangements for filtering out a fluctuating frequency from a frequency mixture
FR1589359A (en) * 1965-04-06 1970-03-31

Also Published As

Publication number Publication date
IT7923897A0 (en) 1979-06-27
IT1121962B (en) 1986-04-23
GB2026798A (en) 1980-02-06
FR2431779A1 (en) 1980-02-15
FR2431779B1 (en) 1983-06-03
DE2830047A1 (en) 1980-01-17

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Legal Events

Date Code Title Description
OAP Request for examination filed
OD Request for examination
OI Miscellaneous see part 1
OI Miscellaneous see part 1
D2 Grant after examination
8363 Opposition against the patent
8331 Complete revocation