US3771159A - Windshield antenna for automobile - Google Patents

Windshield antenna for automobile Download PDF

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Publication number
US3771159A
US3771159A US3771159DA US3771159A US 3771159 A US3771159 A US 3771159A US 3771159D A US3771159D A US 3771159DA US 3771159 A US3771159 A US 3771159A
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US
United States
Prior art keywords
antenna
glass
antenna element
car
window
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 - Lifetime
Application number
Inventor
S Kawaguchi
T Hirase
K Miura
S Esaki
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.)
Clarion Co Ltd
AGC Inc
Original Assignee
Clarion Co Ltd
Asahi Glass Co Ltd
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Filing date
Publication date
Priority to JP2054070U priority Critical patent/JPS5148907Y1/ja
Application filed by Clarion Co Ltd, Asahi Glass Co Ltd filed Critical Clarion Co Ltd
Application granted granted Critical
Publication of US3771159A publication Critical patent/US3771159A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/1271Supports; Mounting means for mounting on windscreens
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/40Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • H01Q5/48Combinations of two or more dipole type antennas

Abstract

A glass antenna for automobiles which comprises a first antenna element set so as to be adapted for an FM broadcast band and a second antenna element. These antenna elements cooperate to receive an AM broadcast electric wave. The feeding points of the antenna elements are connected to each other through means for effecting reactance. The antenna elements are provided in relation to the window glass of the car.

Description

Kawaguchi et al.

, Int. Cl.

Clarion Co., Ltd.; Asahi Glass Co., Ltd, both of Tokyo, Japan Filed: Feb. 4, 1971 Appl. No.: 112,550

Assignee:

Foreign Application Priority Data Mar. 4, 1970 US. Cl. 343/729, 343 713 Field of Search 343/711, 712, 713, 343/720, 850, 725, 726, 727, 728, 853

References Cited UNITED STATES PATENTS l0/l937 Brown ..343/722 7/1966 Lundy ..343/876 Japan 45/20540 T Nov. 6, 1973 3,530,473 9/1970 lves 343/702 2,898,590 8/1959 Pichitino 343/722 3,475,759 10/1969 Winegard 343/701 3,484,584 12/1969 Shaw 1 1 343/711 3,599,214 8/1971 Altmayer 1 343/712 3,576,576 4/1971 Jensen 343/712 2,657,312 10/1953 Saranga 343/726 FOREIGN PATENTS OR APPLICATIONS 647,665 12/1950 Great Britain 343/705 Primary Examiner-Eli Lieberman Att0mey'l(urt Kelrnan ABSTRACT A glass antenna for automobiles which comprises a first antenna element set so as to be adapted for an FM broadcast band and a second antenna element. These antenna elements cooperate to receive an AM broadcast electric wave. The feeding points of the antenna elements are connected to each other through means for effecting reactance. The antenna elements are pr0- vided in relation to the window glass of the car.

3 Claims, 11 Drawing Figures PATENTED NOV 6 I973 SHEET t 0F 4 PIS INVENTORS AGENT 1 WINDSHIELD ANTENNA FOR AUTOMOBILE BACKGROUND This invention relates to an antenna for automobile and, more particularly, to a glass antenna specially adapted to catch electric waves in a plurality of electric wave bands which are very different in frequency, for example, AM and FM broadcasting bands.

Heretofore, a whip antenna has been used widely as an antenna for automobile, which antenna has an extendable rod shaped configuration projecting upright from the car body. Such antenna is advantageous in adaptability for the reception of electric waves over the wide bands, but, on the other ahnd, due to its rod shaped configuration, it has many disadvantages as follows; for example, when the car provided with this antenna in the extended state passes through the entrance of a garage, the antenna will run thereagainst and will be easily damaged, when the car mounting the whip antenna is running at high speed, the antenna is vibrated by the wind-pressure thereagainst so that it produces a noise so as to disturb the reception of broadcasting or other electric wave, and, further, the provision of this whip antenna to a car breaks the sense of beauty thereof.

In order to remove the above-mentioned disadvantages of the whip antenna, a new type of so-called glass antenna for car was developed, in which conductive members in the form of an antenna are used in relation to the glass window of a car. The conductive members are in the form of electric conductors such as wires or strips, and fixed tightly to the surface of the glass window or fixedly disposed between the glass layers of the glass window. 7

Furthermore, an attempt was made to use a glass antenna for the reception of both AM and FM broadcasts. Onezexarhple of such glass antenna is constructed so that a substantially T shaped configuration is formed on the front glass window of a car by means of a pair of reversed L shaped copper wires, the thus-formed T shaped glass antenna having two'upper free ends, the

. L shaped conductors.

This conventional T shaped glass antenna is set so as to receive both AM (Medium Band, 535 1605 KHz) and FM (Very High Frequency, 76 90 MHz, in Japan) broadcastings. However, since the AM and the FM are very different in frequency, in other words, the respective wave length is very different, it is very difficult to set the configuration, that is, the length of the antenna conductor so that satisfactory quality as an FM/AM antenna is attained; therefore, so far the reception efficiency of either AM or' FM broadcast had to be necessarily sacrificed. In the case of an AM'antenna, although it is preferable that the effective length of the antenna be selected to be equal to the wave length (A) of AM or to a preset fractional wave length thereof, for example, Mt, AA, etc., where an antenna element made of copper wire, etc. is provided on or in the front window, its shape or size is naturally limited, so the antenna is designed so as to provide the maximum efficiency within the permitted limits. When it is intended to receive AM broadcasting by using such antenna, impedance matching between the antenna, that is, the antenna element and the feeder, and the receiver practically does not matter. However, in general, in the case of the reception of FM broadcasting, said impedance matching becomes a considerably important matter. Therefore, where the antenna which takes the effective length as lengthened as possible to catch the AM electric wave favorably is used to receive the FM, the correct impedance matching could not be effected.

SUMMARY An object of this invention is to provide an antenna wherein the FM reception efficiency can be increased without any decrease in the AM receiving quality of the AM.

In accordance with this invention, a first antenna element for receiving FM broadcasting and a second antenna element, which are separated, are provided on and/or in the window glass. The FM antenna element is connected to the feeder of a car radio set, and also connected to the second antenna element through means for effecting reactance which may be an inductor and/or a capacitor. This reactance element may be provided on or in the window glass by, for example, printing, coating or the like. The glass window means a front window, a rear window or a side window or a combination thereof. It should be understood that the wording means for effecting reactance as used herein means a circuit means including an inductor and/or a capacitor,-as well as a circuit means including an active element such as a transistor, a diode or the like.

DESCRIPTION OF THE DRAWINGS This invention will now be better illustrated with reference to the attached drawings, given by way of nonlimiting example, in which:

FIG; 1 represents diagrammatically one embodiment of the antenna according to the present invention, adapted on the front window glass of an automobile;

FIGS. 2 to 4 represent schematically and elongatedly various antennas of this invention in relation to the front glass window;

FIGS. 5 and 6 represent schematically and elongatedly other antennas of this invention in relation to the rear glass window;

FIGS. 7 to 10 represent schematically and elongatedly still other antennas of this invention each including a radio frequency pre-amplifier; and

FIG. 11 represents a circuit diagram of one example of the radio frequency pre-amplifier.

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIGS. 1 to 4, 1 shows the front glass of a car, 2 and 3 antenna elements provided on and/or in the front glass 1, specially 3 being an antenna portion for the reception of FM broadcasting, 4 a reactance element comprising a coil and/or an inductor, and 5 a feeder with one end connected to the FM antenna element 3 and to one terminal of the inductor 4, the other end of said feeder being connected to a car radio set 6. As stated above, the inductor may be preferably formed don and/or in the glass window by two-dimentional printing or coating to give a desirable inductance value.

In operation, in the case of the reception of AM broadcasting, the antenna elements 2 and 3 provided to the window glass are both active, so they will catch an electric wave in the middle frequency band. It should be understood that, as mentioned above, the effective length of the antenna when AM broadcasting is received must be lengthened as much as possible. On the other hand, in the case of the reception of FM broadcasting, as stated above, in order to match the impedance of the antenna with that of the feeder (750), only the antenna element 3 must be used. That is to say, in that case, the excess impedance is cancelled by means of the reactance element 4 interposed between the antenna element 2 and the feeder 5. It should be understood that the configuration of the antenna elements may be changed correspondingly to the shape of the glass window, for example.

FIGS. 5 and 6 show other embodiments of the glass antenna of the present invention. These glass antennas each is intended to specially enhance the efficiency of receiving AM broadcasting as compared with the above-mentioned examples. As understood from the Figures, these antennas each is provided with a first or FM antenna element 9 disposed vertically and substantially centrally of the glass window and a second antenna element 8 with two sets of auxiliary elements 8', said second antenna element having two opposed :1 portions positioned adjacently to the edge portion of the window. Preferably, these antenna elements are provided to the rear window glass 7 of a car. Each of the two sets of auxiliary elements 8 is provided in the space defined by the respective 1] portion of the second antenna element 8; In FIG. 5, the respective auxiliary element is substantially horizontal and has one end connected to the vertical segment of the second antenna element 8. In FIG. 6, the respective auxiliary element is substantially vertical, thus substantially in parallel with the FM antenna 9, and has two ends connected respectively to the horizontal segments of the second antenna 8.

In operation, in the case of the reception of AM broadcasting, the first and second antenna elements and the auxiliary elements are all active to receive an electric wave in the medium frequency band. In this case, by the function of the auxiliary elements 8, the antennas illustrated in FIGS. 5 and 6 are considerably increased in effective height thereof and enhance in antenna gain by several dB in comparison with the forms shown in FIGS. 2 to 4. In the case of the reception of FM broadcasting, as stated above, by means of the reactance element 10, only the first antenna' element 9 acts to match the impedance thereof with that of the feeder 11.

In connection with the embodiment in FIG. 6, it has been described that the auxiliary elements are provided substantially in parallel with the FM antenna element. However, it should be noted that, to prevent an interaction between the FM antenna element and the auxiliary elements, the distance therebetween must be made long as much as possible, preferably more than 20 cm. Furthermore, the auxiliary elements may be inclined to the FM antenna by, for example, 5 to 20, preferably 10 to 13, by which the reception sensibility of the FM antenna is increased much more than in the case where the auxiliary elements are provided in parallel with the FM antenna element, and, also, the antenna gain is enhanced by about 3 to 5 dB as compared with the conventional whip antenna.

FIGS. 7 to 10 show still further embodiments of this invention wherein a first antenna conductor 15 for receiving FM broadcasting is provided vertically and substantially centrally of the glass window 13 of an automobile, and another or second antenna conductor 14 is provided so as to extend on one side (refer to FIGS. 9 and 10) or both sides (refer to FIGS. 7 and 8) with respect to said first conductor 15, said first conductor 15 being connected to said second conductor 14 through a reactance element 16, and, further, a radio frequency pre-amplifier 17 is provided connecting said two antenna elements to, a radio receiver 19 through a feeder 18. Preferably, the second conductor or wire strip 14 will be disposed adjacently to the edge of the window glass 13. It is understood that each antenna conductor may be constructed of two or more conductive members. The preamplifier (17) is a solid state chip type integrated circuit and is provided adjacently to the feeding points of the antenna conductors l4 and 15. As shown in FIG. 10, this amplifier circuit may be provided on or in the glass 13.

In FIG. 11, one example of the circuit diagram of this solid state amplifier is illustrated, but, in place thereof, various other circuit forms will be used; therefore, this invention should not be limited by said circuit. The illustrated circuit 17 comprises a field effect transistor (FET), a coil (L capacitors (C C and resistors (R R The circuit constant is determined so as to compensate at least 6 to 10 dB corresponding to the reduced gain in comparison to the antenna gain of the whip antenna.

It is understood that the present invention is not restricted to the above described examples, but that it includes any other alternative embodiment deriving from the above indicated inventive concept.

We claim:

1. An antenna for a car radio set comprising in combination, a window glass disposed on a car;-a first antenna element for reception of electric waves in FM broadcasting band and extending along said window glass substantially centrally and vertically, said first antenna element having at least one free end terminating at the upper portion of the glass and the other end connected to a first conductive terminal which is connected to a feeder from the car radio set within the car; a second antenna element for receiving AM broadcasting electric waves and extending along peripheral edge portions of said window glass, said second antenna element having one end connected to a second conductive terminal, said first and second conductive terminals being disposed at the lower end of the glass window; and an inductive element connected between said two conductive terminals.

2. The antenna of claim 1 further including a radio frequency amplifier inserted between the feeding point of said first antenna element and the feeder of the car radio set but adjacent to said feeding point.

3. The antenna of claim 2 wherein said high frequency amplifier is a solid state chip type integrated circuit.

Claims (3)

1. An antenna for a car radio set comprising in combination, a window glass disposed on a car; a first antenna element for reception of electric waves in FM broadcasting band and extending along said window glass substantially centrally and vertically, said first antenna element having at least one free end terminating at the upper portion of the glass and the other end connected to a first conductive terminal which is connected to a feeder from the car radio set within the car; a second antenna element for receiving AM broadcasting electric waves and extending along peripheral edge portions of said window glass, said second antenna element having one end connected to a second conductive terminal, said first and second conductive terminals being disposed at the lower end of the glass window; and an inductive element connected between said two conductive terminals.
2. The antenna of claim 1 further including a radio frequency amplifier inserted between the feeding point of said first antenna element and the feeder of the car radio set but adjacent to said feeding point.
3. The antenna of claim 2 wherein said high frequency amplifier is a solid state chip type integrated circuit.
US3771159D 1970-03-04 1971-02-04 Windshield antenna for automobile Expired - Lifetime US3771159A (en)

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Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866232A (en) * 1972-12-09 1975-02-11 Delog Detag Flachglas Ag Automotive-vehicle windshield with built-in active-antenna system
US3945014A (en) * 1970-03-21 1976-03-16 Saint-Gobain Industries Windshield antenna with coupling network in the leadin
US3964068A (en) * 1974-01-14 1976-06-15 Taketsugu Torii Window antenna and defroster for use in motor vehicle
US3971030A (en) * 1972-01-14 1976-07-20 Saint-Gobain Industries Antenna window
US3971029A (en) * 1974-01-14 1976-07-20 Toyota Jidosha Kogyo Kabushiki Kaisha Window antenna device for use in motor vehicle
US3972048A (en) * 1974-11-29 1976-07-27 Ross Alan Davis FM-AM windshield antenna
US4003056A (en) * 1975-05-20 1977-01-11 Ross Alan Davis Windshield antenna system with resonant element and cooperating resonant conductive edge
US4063247A (en) * 1976-10-07 1977-12-13 Nippon Sheet Glass Co., Ltd. Heater glass sheet with broad band receiver antennae
US4072954A (en) * 1975-07-24 1978-02-07 Societa Italiana Vetro Siv S.P.A. Multiband antenna for window panes
US4090202A (en) * 1975-07-24 1978-05-16 Societa Italiana Vetro Siv S.P.A. Multiband antenna for automobile windshield
EP0000204A1 (en) * 1977-07-01 1979-01-10 FTE maximal Fernsehtechnik und Elektromechanik GmbH & Co. KG Adapted television antenna and associated amplifier for vehicles
US4160977A (en) * 1978-02-23 1979-07-10 Davis Ross A Automobile antenna
US4163195A (en) * 1976-09-04 1979-07-31 Saint-Gobain Industries Vehicle antenna and window amplifier
US4247954A (en) * 1978-03-01 1981-01-27 Saint-Gobain Industries Active window antenna for motor vehicles
US4849766A (en) * 1986-07-04 1989-07-18 Central Glass Company, Limited Vehicle window glass antenna using transparent conductive film
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
US5097270A (en) * 1989-05-01 1992-03-17 Hans Kolbe & Co. Nachrichtenubertragungstechnik Pane antenna having at least one wire-like antenna conductor combined with a set of heating wires
EP0504525A1 (en) * 1990-11-06 1992-09-23 Nippon Sheet Glass Co., Ltd. Window glass antenna for automobiles
US5266960A (en) * 1989-05-01 1993-11-30 Fuba Hans Kolbe Co. Pane antenna having at least one wire-like antenna conductor combined with a set of heating wires
US5285048A (en) * 1991-02-05 1994-02-08 Harada Kogyo Kabushiki Kaisha Automobile windshield antenna incorporating windshield heater
US5334988A (en) * 1991-03-26 1994-08-02 Nippon Sheet Glass Co., Ltd. Glass antenna for automobile
US5428830A (en) * 1993-09-17 1995-06-27 Ford Motor Company Concealed antenna system with remote variable gain RF amplifier
US5510804A (en) * 1994-10-03 1996-04-23 Ford Motor Company F-shaped three element dipole antenna for motor vehicles
US5565876A (en) * 1990-11-21 1996-10-15 Nippon Sheet Glass Co., Ltd. Window glass antenna
US5581264A (en) * 1992-03-27 1996-12-03 Asahi Glass Company Ltd. Diversity glass antenna for an automobile
US5602558A (en) * 1991-03-26 1997-02-11 Sumitomo Chemical Company, Limited Glass antenna system for automobiles
US5650791A (en) * 1995-09-05 1997-07-22 Ford Motor Company Multiband antenna for automotive vehicle
US5793333A (en) * 1995-03-22 1998-08-11 Mazda Motor Corporation Glass antenna for vehicles, and designing method of the same
US5801663A (en) * 1989-05-01 1998-09-01 Fuba Automotive Gmbh Pane antenna having at least one wire-like antenna conductor combined with a set of heating wires
US5923298A (en) * 1997-04-30 1999-07-13 Ford Motor Company Multiband reception antenna for terrestrial digital audio broadcast bands
EP0963002A1 (en) * 1998-06-03 1999-12-08 Nippon Sheet Glass Co., Ltd. Glass window antenna system for motor vehicles
US6160518A (en) * 1999-04-02 2000-12-12 Visteon Global Technologies, Inc. Dual-loop multiband reception antenna for terrestrial digital audio broadcasts
US6313796B1 (en) * 1993-01-21 2001-11-06 Saint Gobain Vitrage International Method of making an antenna pane, and antenna pane
US6452557B1 (en) * 1994-12-01 2002-09-17 Glass Antennas Technology Limited Antenna arrangement for a vehicle window
EP1542312A2 (en) * 2003-12-10 2005-06-15 Asahi Glass Company, Limited Planar antenna
US20060097934A1 (en) * 2002-07-24 2006-05-11 Harada Industry Co., Ltd. Integrated loop antenna for vehicular applications
US20060176227A1 (en) * 2003-03-19 2006-08-10 Central Glass Co., Ltd. Antenna for vehicle
US20070063906A1 (en) * 2003-09-15 2007-03-22 Richard Langley Integrated antenna with coupled ground
US20070247379A1 (en) * 2006-04-19 2007-10-25 Asahi Glass Company Limited High frequency wave glass antenna for an automobile and rear window glass sheet for an automobile
CN100589277C (en) * 2003-03-19 2010-02-10 中央硝子株式会社 Antenna for vehicle

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2096782A (en) * 1936-05-14 1937-10-26 Rca Corp Antenna
GB647665A (en) * 1948-03-16 1950-12-20 Marconi Wireless Telegraph Co Improvements in or relating to aerial systems for use on aircraft
US2657312A (en) * 1951-09-28 1953-10-27 Saranga Cesare Radio and television antenna
US2898590A (en) * 1953-03-25 1959-08-04 Johnson Co E F Multi-frequency antenna
US3261019A (en) * 1964-04-13 1966-07-12 John E Lundy Picture antenna for television sets
US3475759A (en) * 1967-10-10 1969-10-28 Winegard Co Television antenna with built-in cartridge preamplifier
US3484584A (en) * 1968-07-23 1969-12-16 Ppg Industries Inc Combination of electrically heated transparent window and antenna
US3530473A (en) * 1965-05-17 1970-09-22 Warwick Electronics Inc Single monopole antenna for vhf and uhf television
US3576576A (en) * 1968-10-31 1971-04-27 Gen Motors Corp Concealed windshield broadband antenna
US3599214A (en) * 1969-03-10 1971-08-10 New Tronics Corp Automobile windshield antenna

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2096782A (en) * 1936-05-14 1937-10-26 Rca Corp Antenna
GB647665A (en) * 1948-03-16 1950-12-20 Marconi Wireless Telegraph Co Improvements in or relating to aerial systems for use on aircraft
US2657312A (en) * 1951-09-28 1953-10-27 Saranga Cesare Radio and television antenna
US2898590A (en) * 1953-03-25 1959-08-04 Johnson Co E F Multi-frequency antenna
US3261019A (en) * 1964-04-13 1966-07-12 John E Lundy Picture antenna for television sets
US3530473A (en) * 1965-05-17 1970-09-22 Warwick Electronics Inc Single monopole antenna for vhf and uhf television
US3475759A (en) * 1967-10-10 1969-10-28 Winegard Co Television antenna with built-in cartridge preamplifier
US3484584A (en) * 1968-07-23 1969-12-16 Ppg Industries Inc Combination of electrically heated transparent window and antenna
US3576576A (en) * 1968-10-31 1971-04-27 Gen Motors Corp Concealed windshield broadband antenna
US3599214A (en) * 1969-03-10 1971-08-10 New Tronics Corp Automobile windshield antenna

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945014A (en) * 1970-03-21 1976-03-16 Saint-Gobain Industries Windshield antenna with coupling network in the leadin
US3971030A (en) * 1972-01-14 1976-07-20 Saint-Gobain Industries Antenna window
US3866232A (en) * 1972-12-09 1975-02-11 Delog Detag Flachglas Ag Automotive-vehicle windshield with built-in active-antenna system
US3964068A (en) * 1974-01-14 1976-06-15 Taketsugu Torii Window antenna and defroster for use in motor vehicle
US3971029A (en) * 1974-01-14 1976-07-20 Toyota Jidosha Kogyo Kabushiki Kaisha Window antenna device for use in motor vehicle
US3972048A (en) * 1974-11-29 1976-07-27 Ross Alan Davis FM-AM windshield antenna
US4003056A (en) * 1975-05-20 1977-01-11 Ross Alan Davis Windshield antenna system with resonant element and cooperating resonant conductive edge
US4072954A (en) * 1975-07-24 1978-02-07 Societa Italiana Vetro Siv S.P.A. Multiband antenna for window panes
US4090202A (en) * 1975-07-24 1978-05-16 Societa Italiana Vetro Siv S.P.A. Multiband antenna for automobile windshield
US4163195A (en) * 1976-09-04 1979-07-31 Saint-Gobain Industries Vehicle antenna and window amplifier
US4063247A (en) * 1976-10-07 1977-12-13 Nippon Sheet Glass Co., Ltd. Heater glass sheet with broad band receiver antennae
EP0000204A1 (en) * 1977-07-01 1979-01-10 FTE maximal Fernsehtechnik und Elektromechanik GmbH & Co. KG Adapted television antenna and associated amplifier for vehicles
US4160977A (en) * 1978-02-23 1979-07-10 Davis Ross A Automobile antenna
US4247954A (en) * 1978-03-01 1981-01-27 Saint-Gobain Industries Active window antenna for motor vehicles
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
US4849766A (en) * 1986-07-04 1989-07-18 Central Glass Company, Limited Vehicle window glass antenna using transparent conductive film
US5097270A (en) * 1989-05-01 1992-03-17 Hans Kolbe & Co. Nachrichtenubertragungstechnik Pane antenna having at least one wire-like antenna conductor combined with a set of heating wires
US5801663A (en) * 1989-05-01 1998-09-01 Fuba Automotive Gmbh Pane antenna having at least one wire-like antenna conductor combined with a set of heating wires
US5266960A (en) * 1989-05-01 1993-11-30 Fuba Hans Kolbe Co. Pane antenna having at least one wire-like antenna conductor combined with a set of heating wires
EP0504525A1 (en) * 1990-11-06 1992-09-23 Nippon Sheet Glass Co., Ltd. Window glass antenna for automobiles
US5565876A (en) * 1990-11-21 1996-10-15 Nippon Sheet Glass Co., Ltd. Window glass antenna
US5285048A (en) * 1991-02-05 1994-02-08 Harada Kogyo Kabushiki Kaisha Automobile windshield antenna incorporating windshield heater
US5699071A (en) * 1991-03-26 1997-12-16 Sumitomo Chemical Company, Limited Glass antenna system for automobile
US5334988A (en) * 1991-03-26 1994-08-02 Nippon Sheet Glass Co., Ltd. Glass antenna for automobile
US5602558A (en) * 1991-03-26 1997-02-11 Sumitomo Chemical Company, Limited Glass antenna system for automobiles
US5581264A (en) * 1992-03-27 1996-12-03 Asahi Glass Company Ltd. Diversity glass antenna for an automobile
US6313796B1 (en) * 1993-01-21 2001-11-06 Saint Gobain Vitrage International Method of making an antenna pane, and antenna pane
US5428830A (en) * 1993-09-17 1995-06-27 Ford Motor Company Concealed antenna system with remote variable gain RF amplifier
US5510804A (en) * 1994-10-03 1996-04-23 Ford Motor Company F-shaped three element dipole antenna for motor vehicles
US6452557B1 (en) * 1994-12-01 2002-09-17 Glass Antennas Technology Limited Antenna arrangement for a vehicle window
US5793333A (en) * 1995-03-22 1998-08-11 Mazda Motor Corporation Glass antenna for vehicles, and designing method of the same
US5650791A (en) * 1995-09-05 1997-07-22 Ford Motor Company Multiband antenna for automotive vehicle
US5923298A (en) * 1997-04-30 1999-07-13 Ford Motor Company Multiband reception antenna for terrestrial digital audio broadcast bands
EP0963002A1 (en) * 1998-06-03 1999-12-08 Nippon Sheet Glass Co., Ltd. Glass window antenna system for motor vehicles
US6215450B1 (en) 1998-06-03 2001-04-10 Nippon Sheet Glass Co., Ltd. Glass window antenna system for motor vehicles
US6160518A (en) * 1999-04-02 2000-12-12 Visteon Global Technologies, Inc. Dual-loop multiband reception antenna for terrestrial digital audio broadcasts
US20060097934A1 (en) * 2002-07-24 2006-05-11 Harada Industry Co., Ltd. Integrated loop antenna for vehicular applications
US7212167B2 (en) 2002-07-24 2007-05-01 Harada Industry Co., Ltd. Integrated loop antenna for vehicular applications
US20060176227A1 (en) * 2003-03-19 2006-08-10 Central Glass Co., Ltd. Antenna for vehicle
CN100589277C (en) * 2003-03-19 2010-02-10 中央硝子株式会社 Antenna for vehicle
US7242357B2 (en) * 2003-03-19 2007-07-10 Central Glass Co., Ltd. Antenna for vehicle
KR100834224B1 (en) * 2003-03-19 2008-05-30 샌트랄 글래스 컴퍼니 리미티드 Antenna for vehicle
US20070063906A1 (en) * 2003-09-15 2007-03-22 Richard Langley Integrated antenna with coupled ground
EP1542312A2 (en) * 2003-12-10 2005-06-15 Asahi Glass Company, Limited Planar antenna
US7289075B2 (en) 2003-12-10 2007-10-30 Asahi Glass Company, Limited Planar antenna
EP1542312A3 (en) * 2003-12-10 2005-08-10 Asahi Glass Company, Limited Planar antenna
US20070247379A1 (en) * 2006-04-19 2007-10-25 Asahi Glass Company Limited High frequency wave glass antenna for an automobile and rear window glass sheet for an automobile
US7420517B2 (en) * 2006-04-19 2008-09-02 Asahi Glass Company, Limited High frequency wave glass antenna for an automobile and rear window glass sheet for an automobile

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JPS5148907Y1 (en) 1976-11-25

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