WO1988009569A1 - Vehicle antenna - Google Patents
Vehicle antenna Download PDFInfo
- Publication number
- WO1988009569A1 WO1988009569A1 PCT/GB1988/000409 GB8800409W WO8809569A1 WO 1988009569 A1 WO1988009569 A1 WO 1988009569A1 GB 8800409 W GB8800409 W GB 8800409W WO 8809569 A1 WO8809569 A1 WO 8809569A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conductor
- antenna
- window
- strip
- vehicle
- Prior art date
Links
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
Definitions
- This invention relates to an antenna for use on a motor vehicle, particularly for cellular radio. 5. BACKGROUND ART
- such antennas do not project outside the vehicle and are not therefore susceptible to inadvertent damage or vandalisation . 10. Also, mounting holes in the vehicle bodywork can be avoided. Efficient reception can be achieved with such antennas on the usual AM and FM broadcast bands, and efficient transmission can be achieved in the 4m to 2m VHF mobile radio band , if necessary with the aid of matching and tuning circuitry. 15. Cellular mobile radio is now an important means of communication .
- An object of the present invention is to provide an antenna which is suitable for use with cellular radio yet which is incorporated in a vehicle window .
- a vehicle window having a plurality of peripheral edges and an antenna for use with radio apparatus, said antenna comprising an elongate conductor applied to a surface of the window, characterised in that the length of said conductor is a minor proportion of the length of any said peripheral edge. 5.
- a vehicle having a window with an antenna comprising an elongate conductor
- radio apparatus applied to a surface of the window, and radio apparatus connected to said antenna, characterised in that said radio apparatus is operable in a predetermined frequency band and said conductor has a length less than the free-space quarter-wavelength of the mid-band frequency.
- the conductor may comprise a straight length of a conductor and
- the conductor may be fixed to a vehicle rear window near the top edge thereof . Where the window also has heater wires these should be separate from the antenna.
- the conductor preferably extends in a direction from a top edge towards a bottom edge of the
- the vehicle window preferably further includes a conductive strip extending along at least part of one said peripheral edge , said conductor extending transversely to and having one end close to said strip, and said strip and said conductor being connected respectively to leads of a cable for connection to said radio apparatus whereby said conductive 5.
- strip is arranged to provide a ground plane for said antenna.
- Figure 2 is an enlarged view of a detail of the window.
- Figures 3 + 4 are polar diagrams showing performance of different antennas .
- the window is a rear window of a motor car, although it is to be understood that the invention can be applied to any suitable window of any suitable vehicle .
- the window comprises a glass pane 1 which is generally rectangular or trapezoidal and has top and bottom long edges 2 , 3 which extend 20. at least substantially horizontally, and two short upright side edges 4, 5.
- the pane 1 may be flat or curved and lies in a plane (or is curved relative to a plane) which is substantially vertical or inclined to the vertical, as is conventional.
- the pane 1 fits within an opening in a metal body of the vehicle and is sealed relative to the periphery 25. of the opening with a sealing gasket formed from rubber or similar material.
- the pane 1 incorporates a heater (demister) which comprises a series of parallel, horizontal wires 6 running between upright busbars 7 , 8 , such wires and bars being incorporated in the inner surface of the glass pane or applied thereto e.g. as narrow, flat, printed, 5. conductive strips .
- the bus bars 7, 8 are connected to the usual d .c. power supply of the motor car via an operating switch .
- one busbar 7 is connected to earths (i.e. the car body)
- the other busbar 8 is connected by a lead to positive power supply via the operating switch which may be located for example on the car
- the heater wires 6 extend across a major part of the surface area of the window pane but there is a space between the top edge 2 of the window pane 1 and the uppermost heater wire 6. In this space there is a short, straight upright conductor 9 which is incorporated
- the conductor 9 may comprise a 0.4mm wire fixed by adhesive to the surface of the pane 1, or the conductor may comprise a narrow flat printed conductive strip , say 1 to 1£ mm wide .
- the conductor 9 lies in a vertical plane and terminates at its
- upper end 10 close to the top edge 2 of the window pane 1 near to but well spaced from one side edge 5.
- the top end 10 of the conductor 9 has thereat a portion of increased width which forms a square terminal 11 , say 3 to 4 mm square.
- This strip 12 may be a flat printed conductive strip (say 10-20 mm wide) of similar nature to the printed strips conventionally used for window heaters (demisters) . 5.
- a very narrow gap (say 1-2 mm) is defined between the terminal
- a coaxial cable 13 has its central conductor connected to the terminal 11 and its outer conductor connected to the middle of the 10. strip 12 immediately above the terminal 11.
- the cable 13 is led around the interior of the car to a conventional cellular radio/transmitter 14 which may • be mounted e. g. on the car dashboard .
- the cable 13 is connected directly to the usual antenna socket of the radio/ transmitter .
- the radio/transmitter is tuned to operate in the usual 15. cellular radio band i. e . 890-960MHz .
- the conductor 9 acts as an antenna for the radio /transmitter 14 and the strip 12 acts to define a ground plane for the antenna.
- the strip 12 extends up to the edge 2 of the window pane 1 and in effect forms part of the vehicle body in so far as the strip contacts the
- the width of the strip 12 is large enough to ensure that the strip projects beyond any peripheral window trim thereby to avoid spurious capacitive effects with the trim .
- the length of the strip 12 is not critical but preferably is greater than half the wavelength of the
- the conductor 9 is relatively short , that is , the length of the conductor 9 is much less than the length of any of the edges 2, 3 , 4, 5 of the window pane 1. Moreover the length of the conductor 9 is less than the quarter-wavelength of the middle frequency of the band to which the radio apparatus is tuned . More specifically the effective 5. length of the conductor 9 , i.e. the length from the bottom end of the conductor to the bottom edge of the ground plane strip 12 is trimmed to give resonance at the mid-band frequency of 925MHz of the band to which the radio apparatus is tuned . In practice, the length will . be approximately 55mm which is approximately 30% less than the free-
- the coaxial lead is connected directly to the radio apparatus and matching circuitry or the like is not required since the antenna structure
- the conductor 9 may be applied to a small transparent sheet of soft plastics (e.g. by printing on the plastics) , such sheet being affixed to the window pane 1 by adhesive or by virtue of the adherent properties of the plastics material.
- the antenna is shown applied to a rear window it is to be understood that it may be applied to a side or front window. Being so small, the antenna does not significantly obscure visio
- Figure 3 shows typical performance of a conventional roof -mounte rod antenna (effectively quarter-wave monopole)
- Figure 4 sho typical performance of the antenna of Figures 1 and 2.
- Figures 3 and 4 are polar diagrams recorded by driving a ca
- Figure 3 shows the power of the received signal with the roof-mounte monopole
- Figure 4 shows the power of the received signal wit
Landscapes
- Details Of Aerials (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
A vehicle window, such as the rear window of a motor car, is provided with an antenna which can be used with cellular radio apparatus. The antenna is in the form of a short conductor (9) fixed to the surface of the window pane (1), and the length of the conductor can be less than the quarter-wavelength of the middle of the band to which the radio apparatus is tuned (typically 890-960 MHz).
Description
VEHICLE ANTENNA FIELD OF THE INVENTION
This invention relates to an antenna for use on a motor vehicle, particularly for cellular radio. 5. BACKGROUND ART
It is well known to use the conductors of heated windows of motor vehicles as radio receiving and transmitting antennas .
Advantageously, such antennas do not project outside the vehicle and are not therefore susceptible to inadvertent damage or vandalisation . 10. Also, mounting holes in the vehicle bodywork can be avoided. Efficient reception can be achieved with such antennas on the usual AM and FM broadcast bands, and efficient transmission can be achieved in the 4m to 2m VHF mobile radio band , if necessary with the aid of matching and tuning circuitry. 15. Cellular mobile radio is now an important means of communication .
However , the usual frequency range for this i.e . 890-960 MHz , corresponds to a mid-band free-space wavelength of 324mm and it is therefore not appropriate to use the conductors of a vehicle heated window as the antenna. In practice a short whip antenna mounted on 20. and projecting from the vehicle body is used . DISCLOSURE OF THE INVENTION
An object of the present invention is to provide an antenna which is suitable for use with cellular radio yet which is incorporated in a vehicle window .
25. According to a first aspect of the invention therefore there is provided a vehicle window having a plurality of peripheral edges and
an antenna for use with radio apparatus, said antenna comprising an elongate conductor applied to a surface of the window, characterised in that the length of said conductor is a minor proportion of the length of any said peripheral edge. 5. With this arrangement it has been found possible to achieve good reception and transmission without unduly obscuring vision through the window. In particular, surprisingly, it has been found possible to achieve excellent reception and transmission with a conductor length which is shorter (e. g. at least 30% shorter) than the free-space
10. quarter-wavelength of the mid-band frequency required to define a resonant monopole, due to the dielectric effect of the window glass to which the antenna conductor is applied. Thus , and in accordance with a second aspect of the invention there is provided a vehicle having a window with an antenna comprising an elongate conductor
15. applied to a surface of the window, and radio apparatus connected to said antenna, characterised in that said radio apparatus is operable in a predetermined frequency band and said conductor has a length less than the free-space quarter-wavelength of the mid-band frequency.
The conductor may comprise a straight length of a conductor and
20. this may be applied to any vehicle window at any suitable position.
Conveniently, the conductor may be fixed to a vehicle rear window near the top edge thereof . Where the window also has heater wires these should be separate from the antenna. The conductor preferably extends in a direction from a top edge towards a bottom edge of the
25. window and thus, the conductor may extend in a vertical plane. The vehicle window preferably further includes a conductive strip
extending along at least part of one said peripheral edge , said conductor extending transversely to and having one end close to said strip, and said strip and said conductor being connected respectively to leads of a cable for connection to said radio apparatus whereby said conductive 5. strip is arranged to provide a ground plane for said antenna. BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described further by way of example only and with reference to the accompanying drawings in which :- Figure 1 is a diagrammatic view of one form of a window according
10. to the invention ;
Figure 2 is an enlarged view of a detail of the window.
Figures 3 + 4 are polar diagrams showing performance of different antennas . BEST MODE OF CARRYING OUT THE INVENTION 15. The window is a rear window of a motor car, although it is to be understood that the invention can be applied to any suitable window of any suitable vehicle .
The window comprises a glass pane 1 which is generally rectangular or trapezoidal and has top and bottom long edges 2 , 3 which extend 20. at least substantially horizontally, and two short upright side edges 4, 5. The pane 1 may be flat or curved and lies in a plane (or is curved relative to a plane) which is substantially vertical or inclined to the vertical, as is conventional. The pane 1 fits within an opening in a metal body of the vehicle and is sealed relative to the periphery 25. of the opening with a sealing gasket formed from rubber or similar material.
The pane 1 incorporates a heater (demister) which comprises a series of parallel, horizontal wires 6 running between upright busbars 7 , 8 , such wires and bars being incorporated in the inner surface of the glass pane or applied thereto e.g. as narrow, flat, printed, 5. conductive strips . The bus bars 7, 8 are connected to the usual d .c. power supply of the motor car via an operating switch . Thus , one busbar 7 is connected to earths (i.e. the car body) , and the other busbar 8 is connected by a lead to positive power supply via the operating switch which may be located for example on the car
10. dashboard .
The heater wires 6 extend across a major part of the surface area of the window pane but there is a space between the top edge 2 of the window pane 1 and the uppermost heater wire 6. In this space there is a short, straight upright conductor 9 which is incorporated
15. in or applied to the inner surface of the pane. Thus , the conductor 9 may comprise a 0.4mm wire fixed by adhesive to the surface of the pane 1, or the conductor may comprise a narrow flat printed conductive strip , say 1 to 1£ mm wide .
The conductor 9 lies in a vertical plane and terminates at its
20. upper end 10 close to the top edge 2 of the window pane 1 near to but well spaced from one side edge 5. The top end 10 of the conductor 9 has thereat a portion of increased width which forms a square terminal 11 , say 3 to 4 mm square.
There is a space between the terminal 11 and the top edge 2 of
25. the window pane 1 and within this space there is a flat strip 12 which is applied to the surface of the pane 1 and extends horizontally along
part of the top edge 2. This strip 12 , like the conductor 9 and the terminal 11 , may be a flat printed conductive strip (say 10-20 mm wide) of similar nature to the printed strips conventionally used for window heaters (demisters) . 5. A very narrow gap (say 1-2 mm) is defined between the terminal
11 and the strip 12 and the terminal 11 is located in the middle of the strip 12.
A coaxial cable 13 has its central conductor connected to the terminal 11 and its outer conductor connected to the middle of the 10. strip 12 immediately above the terminal 11. The cable 13 is led around the interior of the car to a conventional cellular radio/transmitter 14 which may • be mounted e. g. on the car dashboard . The cable 13 is connected directly to the usual antenna socket of the radio/ transmitter . The radio/transmitter is tuned to operate in the usual 15. cellular radio band i. e . 890-960MHz .
The conductor 9 acts as an antenna for the radio /transmitter 14 and the strip 12 acts to define a ground plane for the antenna. The strip 12 extends up to the edge 2 of the window pane 1 and in effect forms part of the vehicle body in so far as the strip contacts the
20. body or is so close to the body as to be capacitively linked thereto.
The width of the strip 12 is large enough to ensure that the strip projects beyond any peripheral window trim thereby to avoid spurious capacitive effects with the trim . The length of the strip 12 is not critical but preferably is greater than half the wavelength of the
25. central frequency of the band to which the radio/transmitter is tuned .
The conductor 9 is relatively short , that is , the length of the
conductor 9 is much less than the length of any of the edges 2, 3 , 4, 5 of the window pane 1. Moreover the length of the conductor 9 is less than the quarter-wavelength of the middle frequency of the band to which the radio apparatus is tuned . More specifically the effective 5. length of the conductor 9 , i.e. the length from the bottom end of the conductor to the bottom edge of the ground plane strip 12 is trimmed to give resonance at the mid-band frequency of 925MHz of the band to which the radio apparatus is tuned . In practice, the length will . be approximately 55mm which is approximately 30% less than the free-
10. space quarter-wavelength , this being possible due to the dielectric effect of the glass which modifies the antenna properties of the conductor 9.
The coaxial lead is connected directly to the radio apparatus and matching circuitry or the like is not required since the antenna structure
15. provides 'ideal' matching to the radio apparatus .
A bandwidth of the order of 100MHz (1.3 : 1 vswr) is attainable. It is of course to be understood that the invention is not intended to be restricted to the details of the above embodiment which are described by way of example only.
20. Thus , for example, instead of being applied directly to the surface of the window pane 1, the conductor 9 (and/or the strip 12) may be applied to a small transparent sheet of soft plastics (e.g. by printing on the plastics) , such sheet being affixed to the window pane 1 by adhesive or by virtue of the adherent properties of the plastics material.
25. Also, although the antenna is shown applied to a rear window it is to be understood that it may be applied to a side or front window.
Being so small, the antenna does not significantly obscure visio
Figure 3 shows typical performance of a conventional roof -mounte rod antenna (effectively quarter-wave monopole) , and Figure 4 sho typical performance of the antenna of Figures 1 and 2.
5. Figures 3 and 4 are polar diagrams recorded by driving a ca
(Ford Granada) fitted with the antennas in a tight circle at a distanc in the range 200-500m from a low power 925 MHz test transmitter
Figure 3 shows the power of the received signal with the roof-mounte monopole , and Figure 4 shows the power of the received signal wit
10. the antenna of Figures 1 and 2 applied to the rear window. Th polar diagrams show that the performance obtained with the antenn of Figures 1 and 2 is surprisingly roughly comparable with that of conventional antenna.
Claims
1. A vehicle window having a plurality of peripheral edges and an antenna for use with radio apparatus, said antenna comprising an elongate conductor applied to a surface of the window, characterised
5. in that the length of said conductor is a minor proportion of the length of any said peripheral edge.
2. A vehicle window according to claim 1, wherein the conductor extends in a direction from a top edge towards a bottom edge of the window.
10. 3. A vehicle window according to claim 2, wherein the conductor extends in a vertical plane .
4. A vehicle window according to any one of claims 1 to 3, further including a conductive strip extending along at least part of one said peripheral edge, said conductor extending transversely to and having
15. one end close to said strip , and said strip and said conductor being connected respectively to leads of a cable for connection to said radio apparatus whereby said conductive strip is arranged to provide a ground plane for said antenna.
5. A vehicle window according to any one of claims 1 to 4, wherein 20. said antenna is for use with said radio apparatus operable in the frequency band 890-960MHz, and the length of the conductor is less than the free-space quarter-wavelength of the mid-band frequency.
6. A vehicle window according to claims 4 and 5 wherein the end of the conductor remote from the said strip is spaced from the strip by
25. a distance less than the free-space quarter- wavelength of the mid-band frequency.
7. A vehicle window according to claim 6 , wherein the said distanc is at least 30% less than the free-space quarter-wavelength of th mid-band frequency.
8. A vehicle having a window with an antenna comprising an elongat 5. conductor applied to a surface of the window, and radio apparatu connected to said antenna, characterised in that said radio apparatu is operable in a predetermined frequency band and said conductor ha a length less than the free-space quarter-wavelength of the mid-ban frequency .
10. 9. A vehicle according to claim 8, wherein said radio apparatu comprises receiving circuitry for receiving radio signals in th predetermined frequency band picked up by the antenna. 10. A vehicle according to claim 8 or 9 , wherein said radio apparatus comprises transmitting circuitry for transmitting radio signals in the
15. predetermined frequency band via said antenna.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP88904579A EP0362252B1 (en) | 1987-05-21 | 1988-05-23 | Vehicle antenna |
DE3854298T DE3854298T2 (en) | 1987-05-21 | 1988-05-23 | VEHICLE ANTENNA. |
GB8927510A GB2229581B (en) | 1987-05-21 | 1989-11-17 | Vehicle antenna |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8711995 | 1987-05-21 | ||
GB878711995A GB8711995D0 (en) | 1987-05-21 | 1987-05-21 | Vehicle antenna |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1988009569A1 true WO1988009569A1 (en) | 1988-12-01 |
Family
ID=10617682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1988/000409 WO1988009569A1 (en) | 1987-05-21 | 1988-05-23 | Vehicle antenna |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0362252B1 (en) |
JP (1) | JPH02504453A (en) |
DE (1) | DE3854298T2 (en) |
GB (2) | GB8711995D0 (en) |
WO (1) | WO1988009569A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2210730B (en) * | 1987-10-07 | 1992-02-05 | Nippon Sheet Glass Co Ltd | An antenna apparatus for a vehicle |
WO1992002971A1 (en) * | 1990-08-01 | 1992-02-20 | Window Antenna Oy | Antenna mounted on vehicle window |
DE4307232A1 (en) * | 1992-03-31 | 1993-10-07 | Pioneer Electronic Corp | Car antenna attached to windscreen - has earth wire and antenna wire extending along top edge and side edge of windscreen respectively |
US5264858A (en) * | 1990-07-31 | 1993-11-23 | Asahi Glass Company Ltd. | Glass antenna for a telephone of an automobile |
EP0597757A2 (en) * | 1992-11-10 | 1994-05-18 | Saint Gobain Vitrage International | Motor vehicle window antenna |
US5353039A (en) * | 1991-06-28 | 1994-10-04 | Central Glass Company | Vehicle rear window glass antenna for transmission and reception of ultrashort waves |
DE4410542A1 (en) * | 1994-03-26 | 1995-09-28 | Kolbe & Co Hans | Mobile radio telephone for motor vehicle with separate aerials on body |
DE19612958A1 (en) * | 1996-04-01 | 1997-10-02 | Fuba Automotive Gmbh | Antenna amplifier on a window pane |
US6008766A (en) * | 1992-11-27 | 1999-12-28 | Nippon Sheet Glass Co., Ltd. | Rear window glass antenna for automobiles |
DE4220654B4 (en) * | 1991-06-26 | 2005-06-09 | Pilkington Deutschland Ag | Vehicle window pane with mobile radio antenna |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2593899Y2 (en) * | 1992-02-05 | 1999-04-19 | 日本板硝子株式会社 | Automotive window glass antenna device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2571179A1 (en) * | 1984-09-29 | 1986-04-04 | Pioneer Electronic Corp | MOBILE ANTENNA UNIT |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4233337A (en) * | 1978-05-01 | 1980-11-11 | International Business Machines Corporation | Method for forming semiconductor contacts |
JPS54152447A (en) * | 1978-05-22 | 1979-11-30 | Nippon Sheet Glass Co Ltd | Very high frequency receiving antenna |
JPS5817705A (en) * | 1981-07-23 | 1983-02-02 | Mazda Motor Corp | Antenna in common use for conductor for heating window glass of car |
JPH0767043B2 (en) * | 1983-04-22 | 1995-07-19 | 住友電気工業株式会社 | Unipole type TV antenna |
-
1987
- 1987-05-21 GB GB878711995A patent/GB8711995D0/en active Pending
-
1988
- 1988-05-23 EP EP88904579A patent/EP0362252B1/en not_active Expired - Lifetime
- 1988-05-23 WO PCT/GB1988/000409 patent/WO1988009569A1/en active IP Right Grant
- 1988-05-23 DE DE3854298T patent/DE3854298T2/en not_active Expired - Fee Related
- 1988-05-23 JP JP50432488A patent/JPH02504453A/en active Pending
-
1989
- 1989-11-17 GB GB8927510A patent/GB2229581B/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2571179A1 (en) * | 1984-09-29 | 1986-04-04 | Pioneer Electronic Corp | MOBILE ANTENNA UNIT |
Non-Patent Citations (1)
Title |
---|
Patent Abstracts of Japan, volume 9, no. 56 (E-302)(1779), 12 March 1985, & JP-A-59196605 (SUMITOMO DENKI KOGYO K.K.) 8 November 1984 * |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2210730B (en) * | 1987-10-07 | 1992-02-05 | Nippon Sheet Glass Co Ltd | An antenna apparatus for a vehicle |
US5264858A (en) * | 1990-07-31 | 1993-11-23 | Asahi Glass Company Ltd. | Glass antenna for a telephone of an automobile |
US5365242A (en) * | 1990-07-31 | 1994-11-15 | Asahi Glass Company Ltd. | Glass antenna for a telephone of an automobile |
WO1992002971A1 (en) * | 1990-08-01 | 1992-02-20 | Window Antenna Oy | Antenna mounted on vehicle window |
DE4220654B4 (en) * | 1991-06-26 | 2005-06-09 | Pilkington Deutschland Ag | Vehicle window pane with mobile radio antenna |
US5353039A (en) * | 1991-06-28 | 1994-10-04 | Central Glass Company | Vehicle rear window glass antenna for transmission and reception of ultrashort waves |
DE4307232A1 (en) * | 1992-03-31 | 1993-10-07 | Pioneer Electronic Corp | Car antenna attached to windscreen - has earth wire and antenna wire extending along top edge and side edge of windscreen respectively |
DE4237818A1 (en) * | 1992-11-10 | 1994-05-19 | Ver Glaswerke Gmbh | Window antenna for motor vehicles |
EP0597757A2 (en) * | 1992-11-10 | 1994-05-18 | Saint Gobain Vitrage International | Motor vehicle window antenna |
EP0597757A3 (en) * | 1992-11-10 | 1995-02-01 | Saint Gobain Vitrage | Motor vehicle window antenna. |
DE4237818C3 (en) * | 1992-11-10 | 2000-12-14 | Sekurit Saint Gobain Deutsch | Window antenna for motor vehicles |
US6008766A (en) * | 1992-11-27 | 1999-12-28 | Nippon Sheet Glass Co., Ltd. | Rear window glass antenna for automobiles |
DE4410542A1 (en) * | 1994-03-26 | 1995-09-28 | Kolbe & Co Hans | Mobile radio telephone for motor vehicle with separate aerials on body |
DE4410542B4 (en) * | 1994-03-26 | 2004-07-22 | Fuba Automotive Gmbh & Co. Kg | Arrangement for the operation of radio equipment |
DE19612958A1 (en) * | 1996-04-01 | 1997-10-02 | Fuba Automotive Gmbh | Antenna amplifier on a window pane |
Also Published As
Publication number | Publication date |
---|---|
EP0362252B1 (en) | 1995-08-09 |
DE3854298D1 (en) | 1995-09-14 |
GB8711995D0 (en) | 1987-06-24 |
DE3854298T2 (en) | 1996-04-18 |
GB2229581A (en) | 1990-09-26 |
GB2229581B (en) | 1991-05-01 |
JPH02504453A (en) | 1990-12-13 |
GB8927510D0 (en) | 1990-02-21 |
EP0362252A1 (en) | 1990-04-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3568011B2 (en) | An automobile having an antenna windowpane mounted in at least one windowpane opening of a vehicle body | |
US3599214A (en) | Automobile windshield antenna | |
US8576130B2 (en) | Wideband antenna | |
US6118410A (en) | Automobile roof antenna shelf | |
US10811760B2 (en) | Multi-band window antenna | |
US5293174A (en) | Vehicle antenna | |
EP0568284B1 (en) | Antenna for vehicle window | |
EP0362252B1 (en) | Vehicle antenna | |
JPH0363845B2 (en) | ||
US4072954A (en) | Multiband antenna for window panes | |
US3793590A (en) | Window mounted vehicular radio antenna | |
EP0335708B1 (en) | A vehicle window antenna | |
US20170040662A1 (en) | Multi-element window antenna | |
US7242357B2 (en) | Antenna for vehicle | |
US4090202A (en) | Multiband antenna for automobile windshield | |
JP2824789B2 (en) | Broadband loop antenna | |
US4072955A (en) | Multiband antenna for window panes | |
JP2005229140A (en) | Antenna for vehicle | |
JP2003101318A (en) | Windshield antenna for automobile | |
JP2002204112A (en) | Antenna device for vehicle | |
JP2003017919A (en) | Window glass antenna for automobile | |
CA1071753A (en) | Multiband antenna for window panes | |
JP2002314314A (en) | Window shield antenna for automobile | |
CN118077097A (en) | Antenna device for vehicle | |
JP2001156520A (en) | Glass antenna for automobile |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): GB JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LU NL SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1988904579 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1988904579 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1988904579 Country of ref document: EP |