EP0124055A2 - Antenne active adhérant au pare-brise d'un véhicule pour toutes les sortes de polarisation - Google Patents

Antenne active adhérant au pare-brise d'un véhicule pour toutes les sortes de polarisation Download PDF

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Publication number
EP0124055A2
EP0124055A2 EP84104520A EP84104520A EP0124055A2 EP 0124055 A2 EP0124055 A2 EP 0124055A2 EP 84104520 A EP84104520 A EP 84104520A EP 84104520 A EP84104520 A EP 84104520A EP 0124055 A2 EP0124055 A2 EP 0124055A2
Authority
EP
European Patent Office
Prior art keywords
antenna
amplifier
conductor
frame
windshield
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.)
Granted
Application number
EP84104520A
Other languages
German (de)
English (en)
Other versions
EP0124055B1 (fr
EP0124055A3 (en
EP0124055B2 (fr
Inventor
Heinz Prof. Dr. Ing. Lindenmeier
Gerhard Prof. Dr. Ing. Flachenecker
Jochen Dr. Ing. Hopf
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.)
Fuba Automotive GmbH and Co KG
Original Assignee
Fuba Automotive GmbH and Co KG
Hans Kolbe and Co
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6197618&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0124055(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Fuba Automotive GmbH and Co KG, Hans Kolbe and Co filed Critical Fuba Automotive GmbH and Co KG
Publication of EP0124055A2 publication Critical patent/EP0124055A2/fr
Publication of EP0124055A3 publication Critical patent/EP0124055A3/de
Publication of EP0124055B1 publication Critical patent/EP0124055B1/fr
Application granted granted Critical
Publication of EP0124055B2 publication Critical patent/EP0124055B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1271—Supports; Mounting means for mounting on windscreens
    • 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

Definitions

  • the invention relates to an active windshield antenna for motor vehicles for VHF and LMK radio reception, which encloses the metallic, electrically conductive frame, the windshield of the motor vehicle, and an antenna conductor and an antenna amplifier with two input connections and an output line, and in which the antenna amplifier is attached to or in the windshield near the metallic frame and the antenna conductor, the first input connection of the antenna amplifier is connected to the frame via the shortest possible connecting line to one end of the antenna conductor and the second input connection of the antenna amplifier to the frame and the output line of the amplifier to Recipient is guided.
  • Active windshield antennas with the properties described above are known for example from DE-GM 78 08 489.
  • the invention is based on the object of realizing an active windshield antenna, the reception power of which has good reception properties both in the case of horizontally and vertically and circularly polarized VHF reception fields and in the vertically polarized LMK range, and the requirement that the mounting point also be met for the amplifier near the metal frame can be freely chosen with regard to vehicle-specific aspects.
  • a Antenna conductor for example in the form of an antenna wire, which runs parallel to the frame up to the vertical line of symmetry of the windshield, bends at a kink on the line of symmetry and is continued along this line of symmetry and that in the amplifier for the low-frequency LMK range and separate transmission paths are included in the VHF range and the transmission path of the LMK range has an LMK amplifier with a high-impedance input impedance at the input and the input impedance of the amplifier is high-resistance in the LMK frequency range.
  • An antenna according to the invention has the particular advantage of delivering excellent reception results in the case of horizontal as well as vertical and circular polarization in the FM range.
  • the antenna according to the invention delivers good results in all types of polarization.
  • the location for the antenna connection point and the amplifier is predetermined by vehicle-specific constraints.
  • the constraints often result from the assembly sequence in the manufacture of the motor vehicle and from the requirement that the antenna amplifier be exchangeable and retrofitted.
  • the achievable reception properties are largely independent of the specified installation location.
  • a comparison of the The length of the ladder or turn with regard to an adaptation to the current vehicle body or windshield opening is largely unproblematic with the given ladder configuration.
  • Fig. 1 shows the front window of the vehicle with a view from the passenger compartment.
  • the antenna amplifier 5 is attached in the vicinity of the metal frame 2 and is connected at its ground point to the metal frame of the windshield via the connection 8 (input connection).
  • the antenna amplifier 5 has at its input a branching of the transmission paths for signal components from the FM frequency range and the LMK frequency range.
  • Such a signal branching is known, for example, from DE-PS 21 15 657 or from DE-PS 21 66 898 or DE-PS 19 19 749.
  • the transmission path for the LMK frequency range contains an amplifier with a high-impedance input impedance, as is known, for example, from DE-PS 20 21 331 or DE-PS 25 54 828 or DE-PS 25 54 829 is known.
  • the circuit for branching the signals does not have a low-impedance input impedance of the LMK amplifier in the LMK frequency range loads, so that the input impedance of the overall amplifier 5 in the LMK frequency range is high overall.
  • the output line 6 of the antenna amplifier 5 is led to a receiver 7.
  • the first input terminal 3 of the antenna amplifier 5 is connected to the one end of the antenna conductor 4a, 4b via the shortest possible connecting line.
  • the interaction of the conductor configuration given by the antenna conductors 4a and 4b with the LMK amplifier 10 is explained below.
  • the conductor 4b makes the essential contribution to reception. In the interest of good reception in the LMK area, the conductor 4b should not be chosen too short and if possible use the full pane height. Although the reception field strength in the lower part of the conductor 4b is opposite to the field strength in the upper part 4a, the full conductor length is preferable from the point of view of the LMK reception due to the associated increased capacitance.
  • This contribution is due to the high concentration of the electric field lines in the vicinity of the metal frame 2, which is a significant Ver even with small distances of the conductor 4a from the metal frame 2 improves reception. This makes it possible to choose the distance A of this conductor 4a from the metal frame 2 so small that it does not significantly impair the driver's or passenger's view and the design of the windshield. Distances A significantly less than 10mm between the conductor 4a and the metal frame 2 should be avoided.
  • the pane opening 1 enclosed by the conductive frame 2 can be regarded approximately as a slot radiator which can be optimally excited by a wave with an electrical field strength vector oriented in the direction of the vertical line of symmetry 9.
  • a resonance-like increase in the field strength along the line of symmetry 9 occurs when the width of the window opening corresponds to approximately half a wavelength, as is usually the case with today's conventional cars.
  • field components in the direction of the symmetry line 9, which excite the disk resonance are present because of the pane inclined in the vehicle.
  • a conductor or wire structure such as the conductor part 4b is therefore strongly coupled to the receiving field.
  • the coupling of the conductor part 4a can be changed via the distance A, small distances A between the conductor 4a and the frame 2 resulting in low power consumption from the field and large distances A leading to higher power consumption from the field.
  • the distance A can therefore also be used to change the ratio of the contributions to reception by the conductor parts 4a and 4b in the FM range.
  • the available output power of the structure can be optimized by varying the distance 11 between the end of the vertical conductor part 4b and the frame 2, the maximum possible length often being found to be the optimal length for all polarizations.
  • the distance 11 should not be less than approx. 2 mm.
  • the optimal distance 11 between the end of the conductor part 4b and the frame 2 must be found by the fact that for different distances 11 through longer measurement runs with statistical travel routes, the mean antenna output voltage resulting from the input resistance of a measurement receiver structure under investigation compared to the average output voltage of the reference antenna is determined. From this voltage on a non-power-adjusted load resistor must then after measuring the impedance of the conductor or wire structure on the ver available mean output power are converted, that is to say the power that would have been achieved with a power-adjusted load.
  • the optimum distance 11 is when this available signal power is at a maximum, the value of the impedance of the conductor or wire structure itself being almost insignificant, since low-loss transformation circuits can be used in the antenna amplifier 5 within the transmission path for the FM frequency range 13.
  • Such transformation circuits are expediently to be designed such that noise adaptation for the input transistor is achieved if an active, amplifying three-pole element such as a field effect transistor or a bipolar transistor is used in the transmission path 13, or it is necessary to adapt the power to the characteristic impedance of the connecting cable 6 to the receiver 7, If the transmission path 13 is designed to be passive.
  • Fig. 2 shows an advantageous embodiment of the invention, in which the antenna amplifier 5 and the antenna connector are located near the lower right corner of the metal frame and the break point 12 is located near the upper horizontal part of the metal frame and the conductor 4a parallel to right and to the horizontal upper part of the metal frame.
  • the amplifier is mounted in the area of the dashboard, an area in which there is often enough space and also for retrofitting an antenna or to replace the antenna amplifier is usually easily accessible. It is also advantageous at this installation location that only a relatively short connection cable to the receiver is required.
  • FIG. 4 shows an embodiment of the invention with the same mounting point for the amplifier as in FIG. 2, but with a minimized conductor or wire length on the disk and, compared to the structure according to FIG. 2, a simple geometry of the conductor arrangement with only a single break point , which results in cost advantages in production.
  • the danger of interference coupling from the engine compartment to the antenna structure in an embodiment according to FIG. 4 is due to the greater proximity.
  • Fig. 3 shows a likewise advantageous attachment of the amplifier in the upper right corner of the metal frame, an area in which there is often enough space for the antenna amplifier in the right spar or under the vehicle headlining.
  • the connecting cable can often simply be led down under the plastic cover with which the metal bar is clad.
  • the conductor or wire structure itself has the same advantages as the structure according to FIG. 4, namely the advantage of simplicity and that of inexpensive production, but is not at risk with regard to the coupling in of motor faults.

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  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
EP84104520A 1983-04-28 1984-04-20 Antenne active adhérant au pare-brise d'un véhicule pour toutes les sortes de polarisation Expired - Lifetime EP0124055B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3315458 1983-04-28
DE19833315458 DE3315458A1 (de) 1983-04-28 1983-04-28 Aktive windschutzscheibenantenne fuer alle polarisationsarten

Publications (4)

Publication Number Publication Date
EP0124055A2 true EP0124055A2 (fr) 1984-11-07
EP0124055A3 EP0124055A3 (en) 1987-05-27
EP0124055B1 EP0124055B1 (fr) 1992-10-21
EP0124055B2 EP0124055B2 (fr) 1997-07-23

Family

ID=6197618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104520A Expired - Lifetime EP0124055B2 (fr) 1983-04-28 1984-04-20 Antenne active adhérant au pare-brise d'un véhicule pour toutes les sortes de polarisation

Country Status (4)

Country Link
US (1) US4602260A (fr)
EP (1) EP0124055B2 (fr)
DE (2) DE3315458A1 (fr)
ES (1) ES531970A0 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2587845A1 (fr) * 1985-09-21 1987-03-27 Nippon Sheet Glass Co Ltd Antenne de fenetre pour vehicule
DE3905813A1 (de) * 1988-02-25 1989-09-07 Central Glass Co Ltd Kraftfahrzeug-fensterglasantenne fuer den empfang von ukw-rundfunk- und vhf- wie uhf-fernsehsendungen
EP0346591A1 (fr) * 1988-06-14 1989-12-20 FUBA Hans Kolbe & Co Antenne pour la réception des ondes métriques installée ensemble avec un chauffage de pare-brise de véhicule.
US4910796A (en) * 1986-09-01 1990-03-20 Harada Kogyo Kabushiki Kaisha Automobile antenna
US4914447A (en) * 1986-11-21 1990-04-03 Asahi Glass Company, Ltd. Antenna for mobile telephone on a glass panel of an automobile
EP0386678A1 (fr) * 1989-03-08 1990-09-12 FUBA Hans Kolbe & Co Active antenne réceptrice d'un vehicule, dont le conducteur d'antenne étant placé sur ou dans une surface non-conductrice installéé dans une carosserie métallique
DE19612958A1 (de) * 1996-04-01 1997-10-02 Fuba Automotive Gmbh Antennenverstärker auf einer Fensterscheibe

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4903035A (en) * 1983-12-20 1990-02-20 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry
US4903034A (en) * 1983-12-20 1990-02-20 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry
US4928108A (en) * 1983-12-20 1990-05-22 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry for split passband matching
US4823140A (en) * 1984-06-18 1989-04-18 Asahi Glass Company Ltd. Antenna device for a television receiver mounted on an automobile
JPS6182502A (ja) * 1984-09-29 1986-04-26 Pioneer Electronic Corp 車輌用アンテナ装置
DE3619704A1 (de) * 1986-06-12 1987-12-17 Lindenmeier Heinz Antennenanordnung fuer diversityempfang in der fensterscheibe eines kraftfahrzeugs
US5019830A (en) * 1989-03-13 1991-05-28 Harada Kogyo Kabushiki Kaisha Amplified FM antenna with parallel radiator and ground plane
DE4041863A1 (de) * 1990-12-26 1992-07-02 Lindenmeier Heinz Antennenverstaerkerschaltung fuer aktive hochlineare empfangsantennen mit eingangsseitiger rauschanpassung mit mindestens zwei aktiven dreipolen
JPH0746016A (ja) * 1993-07-30 1995-02-14 Nippon Sheet Glass Co Ltd 自動車電話用窓ガラスアンテナ
JPH08204443A (ja) * 1995-01-27 1996-08-09 Nippon Mektron Ltd 受信用コプレーナ線路給電アクティブアンテナ
EP0851527B1 (fr) * 1996-12-20 2001-10-24 Central Glass Company, Limited Antenne de vitre latérale de véhicule pour la réception d'ondes radiodiffusées
US20030140351A1 (en) * 1998-04-17 2003-07-24 Hoarty W. Leo Cable television system compatible bandwidth upgrade using embedded digital channels
US20030112370A1 (en) * 2001-12-18 2003-06-19 Chris Long Adaptive expanded information capacity for communications systems
US6433835B1 (en) 1998-04-17 2002-08-13 Encamera Sciences Corporation Expanded information capacity for existing communication transmission systems
DE19925127C1 (de) * 1999-06-02 2000-11-02 Daimler Chrysler Ag Antennenanordnung in Kraftfahrzeugen
US6239758B1 (en) 2000-01-24 2001-05-29 Receptec L.L.C. Vehicle window antenna system
DE10114769B4 (de) * 2001-03-26 2015-07-09 Heinz Lindenmeier Aktive Breitbandempfangsantenne
US20030219085A1 (en) * 2001-12-18 2003-11-27 Endres Thomas J. Self-initializing decision feedback equalizer with automatic gain control
US7180942B2 (en) 2001-12-18 2007-02-20 Dotcast, Inc. Joint adaptive optimization of soft decision device and feedback equalizer
US6917336B2 (en) * 2002-01-23 2005-07-12 Dotcast, Inc. Miniature ultra-wideband active receiving antenna
US7601130B2 (en) * 2002-02-25 2009-10-13 Saebo, Inc. Dynamic hand splint
US7580482B2 (en) * 2003-02-19 2009-08-25 Endres Thomas J Joint, adaptive control of equalization, synchronization, and gain in a digital communications receiver
US7446719B2 (en) 2004-05-28 2008-11-04 Denso Corporation Mobile antenna mounted on a vehicle body
JP4064978B2 (ja) * 2004-05-28 2008-03-19 株式会社デンソー 車載アンテナの搭載構造
DE102006039357B4 (de) * 2005-09-12 2018-06-28 Heinz Lindenmeier Antennendiversityanlage zum Funkempfang für Fahrzeuge
DE102007017478A1 (de) * 2007-04-13 2008-10-16 Lindenmeier, Heinz, Prof. Dr. Ing. Empfangsanlage mit einer Schaltungsanordnung zur Unterdrückung von Umschaltstörungen bei Antennendiversity
EP2037593A3 (fr) * 2007-07-10 2016-10-12 Delphi Delco Electronics Europe GmbH Installation de diversité d'antennes pour la réception radio à bande relativement large dans des véhicules
DE102007039914A1 (de) * 2007-08-01 2009-02-05 Lindenmeier, Heinz, Prof. Dr. Ing. Antennendiversityanlage mit zwei Antennen für den Funkempfang in Fahrzeugen
DE102008003532A1 (de) * 2007-09-06 2009-03-12 Lindenmeier, Heinz, Prof. Dr. Ing. Antenne für den Satellitenempfang
PT2209221T (pt) * 2009-01-19 2018-12-27 Fuba Automotive Electronics Gmbh Sistema de recepção para a soma de sinais de antena em fase
DE102009011542A1 (de) * 2009-03-03 2010-09-09 Heinz Prof. Dr.-Ing. Lindenmeier Antenne für den Empfang zirkular in einer Drehrichtung der Polarisation ausgestrahlter Satellitenfunksignale
DE102009023514A1 (de) * 2009-05-30 2010-12-02 Heinz Prof. Dr.-Ing. Lindenmeier Antenne für zirkulare Polarisation mit einer leitenden Grundfläche

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2106647A1 (de) * 1970-02-12 1971-08-26 Asahi Glass Co Ltd Antenne fur ein Kraftfahrzeug
DE2039076A1 (de) * 1970-08-06 1972-02-10 Franz Christ Antenne fuer Kraftfahrzeuge
DE1919749B2 (de) * 1969-04-18 1973-07-19 Hans Kolbe & Co, 3202 Bad Salzdetfurth Aktive empfangsantenne mit dipolcharakter
DE2429628A1 (de) * 1974-06-20 1976-01-08 Hans Heinrich Prof Dr Meinke Empfangsantenne fuer kraftfahrzeuge
FR2310640A1 (fr) * 1975-05-06 1976-12-03 Saint Gobain Antenne de vehicule
DE7808489U1 (de) * 1978-03-20 1978-10-05 Flachenecker, Gerhard, Prof. Dr.-Ing., 8012 Ottobrunn Kraftfahrzeug mit eingebauter Antenne
FR2513021A1 (fr) * 1981-09-15 1983-03-18 Siv Soc Italiana Vetro Antenne multibande, notamment pour vitre de vehicule automobile
EP0079001A1 (fr) * 1981-11-07 1983-05-18 Robert Bosch Gmbh Circuit pour la réception des signaux haute fréquence

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2115657C3 (de) * 1971-03-31 1983-12-22 Flachenecker, Gerhard, Prof. Dr.-Ing., 8012 Ottobrunn Aktive Unipol-Empfangsantenne
DE2166898C2 (de) * 1971-03-31 1982-08-26 Gerhard Prof. Dr.-Ing. 8012 Ottobrunn Flachenecker Aktive Unipol-Empfangsantenne für den Empfang in zwei durch eine Frequenzlücke getrennten Frequenzbereichen
GB1417715A (en) * 1972-11-14 1975-12-17 Triplex Safety Glass Co Vehicle windscreens
US3990072A (en) * 1974-12-09 1976-11-02 Xerox Corporation Acoustic residue algebra decoder
DE7527621U (de) * 1975-09-01 1976-05-20 Meinke, Hans Heinrich, Prof. Dr., 8035 Gauting Antenne fuer den rundfunkempfang im kraftfahrzeug
DE2554829C3 (de) * 1975-12-05 1985-01-24 Flachenecker, Gerhard, Prof. Dr.-Ing., 8012 Ottobrunn Aktive Empfangsantenne mit einer gegenkoppelnden Impedanz

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1919749B2 (de) * 1969-04-18 1973-07-19 Hans Kolbe & Co, 3202 Bad Salzdetfurth Aktive empfangsantenne mit dipolcharakter
DE2106647A1 (de) * 1970-02-12 1971-08-26 Asahi Glass Co Ltd Antenne fur ein Kraftfahrzeug
DE2039076A1 (de) * 1970-08-06 1972-02-10 Franz Christ Antenne fuer Kraftfahrzeuge
DE2429628A1 (de) * 1974-06-20 1976-01-08 Hans Heinrich Prof Dr Meinke Empfangsantenne fuer kraftfahrzeuge
FR2310640A1 (fr) * 1975-05-06 1976-12-03 Saint Gobain Antenne de vehicule
DE7808489U1 (de) * 1978-03-20 1978-10-05 Flachenecker, Gerhard, Prof. Dr.-Ing., 8012 Ottobrunn Kraftfahrzeug mit eingebauter Antenne
FR2513021A1 (fr) * 1981-09-15 1983-03-18 Siv Soc Italiana Vetro Antenne multibande, notamment pour vitre de vehicule automobile
EP0079001A1 (fr) * 1981-11-07 1983-05-18 Robert Bosch Gmbh Circuit pour la réception des signaux haute fréquence

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2587845A1 (fr) * 1985-09-21 1987-03-27 Nippon Sheet Glass Co Ltd Antenne de fenetre pour vehicule
US4910796A (en) * 1986-09-01 1990-03-20 Harada Kogyo Kabushiki Kaisha Automobile antenna
US4914447A (en) * 1986-11-21 1990-04-03 Asahi Glass Company, Ltd. Antenna for mobile telephone on a glass panel of an automobile
DE3905813A1 (de) * 1988-02-25 1989-09-07 Central Glass Co Ltd Kraftfahrzeug-fensterglasantenne fuer den empfang von ukw-rundfunk- und vhf- wie uhf-fernsehsendungen
DE3905813C2 (fr) * 1988-02-25 1992-02-20 Central Glass Co., Ltd., Yamaguchi, Jp
EP0346591A1 (fr) * 1988-06-14 1989-12-20 FUBA Hans Kolbe & Co Antenne pour la réception des ondes métriques installée ensemble avec un chauffage de pare-brise de véhicule.
EP0386678A1 (fr) * 1989-03-08 1990-09-12 FUBA Hans Kolbe & Co Active antenne réceptrice d'un vehicule, dont le conducteur d'antenne étant placé sur ou dans une surface non-conductrice installéé dans une carosserie métallique
DE19612958A1 (de) * 1996-04-01 1997-10-02 Fuba Automotive Gmbh Antennenverstärker auf einer Fensterscheibe
US5905469A (en) * 1996-04-01 1999-05-18 Fuba Automotive Gmbh Windowpane antenna installation

Also Published As

Publication number Publication date
EP0124055B1 (fr) 1992-10-21
DE3315458C2 (fr) 1988-06-30
DE3315458A1 (de) 1984-11-08
DE3485958D1 (de) 1992-11-26
ES8506943A1 (es) 1985-08-01
EP0124055A3 (en) 1987-05-27
EP0124055B2 (fr) 1997-07-23
US4602260A (en) 1986-07-22
ES531970A0 (es) 1985-08-01

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