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US3728732A - Window glass antenna - Google Patents

Window glass antenna Download PDF

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Publication number
US3728732A
US3728732A US00094325A US3728732DA US3728732A US 3728732 A US3728732 A US 3728732A US 00094325 A US00094325 A US 00094325A US 3728732D A US3728732D A US 3728732DA US 3728732 A US3728732 A US 3728732A
Authority
US
United States
Prior art keywords
antenna
antenna elements
window glass
antenna element
elements
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
US00094325A
Other languages
English (en)
Inventor
T Igarashi
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.)
AGC Inc
Original Assignee
Asahi Glass Co Ltd
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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Application granted granted Critical
Publication of US3728732A publication Critical patent/US3728732A/en
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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • B60J1/02—Windows; Windscreens; Accessories therefor arranged at the vehicle front, e.g. structure of the glazing, mounting of the glazing

Definitions

  • This invention relates to a window glass antenna, and more particularly to an antenna to be mounted within a window of a motor vehicle.
  • a radio antenna may be mounted on or between the two laminated glass sheets of conventional automobile windows.
  • FM frequency modulated
  • AM amplitude modulated
  • a switch is provided to permit selective use of one or the other of the antenna elements depending upon whether AM or FM broadcasts,
  • FIG. 3 is a plan view of another embodiment of the invention illustrating an automobile window including an antenna configuration different from that of FIG. 2.
  • the window I includes an FM radio antenna 2 and an AM radio antenna 3, illustrated in schematic form.
  • an automobile windshield 11 which may be comprised of two laminated glass sheets with an interposed layer of thermoplastic material, is shown as including an AM antenna 12 as well as an FM antenna 13.
  • the antennas l2 and 13 may consist either of thin copper wires or printed strips of conductive material,
  • wires are to be used, their diameters may be within the range of 0.1 mm. to 1 mm. although wires of diameters between 0.125 and 0.7 mm. have been found most satisfactory.
  • the wire may be inserted in the layer of thermoplastic material which is bonded between the two sheets of window glass as they are laminated together.
  • Such strips may be formed of commercial silver paste, the nonvolatile component of which may have approximately the following composition:
  • This paste may be printed on the window glass using conventional screen printing techniques.
  • the printed glass sheet is heated to about 100C. for 5 minutes to dry the paste. Then, the sheet of printed glass is heat treated in a furnace at approximately 700C. for about 4 minutes to fix the silver paste.
  • the antenna can also be printed on glass sheet using a conductive solder composed by weight of 40 to 98% Pb, 1.8 to Sn, 0.05 to 10% Zn, and 0.05 to 10% Sb.
  • a conductive solder composed by weight of 40 to 98% Pb, 1.8 to Sn, 0.05 to 10% Zn, and 0.05 to 10% Sb.
  • the capacitive effect between the antenna and the metal body of the vehicle must be considered. For example, as the antennas are moved closer to the metal vehicle body, their capacitance increases. Accordingly, it is desirable to position the antenna as far as possible from the automobile body to minimize the capacitive effect. However, it is also important not to obscure the view through the window in which the antenna is mounted. Accordingly, it has been found that in order to minimize the capacitive effect and the vision obscuring effect of the antennas l2 and 13, the main branches of the antennas should be positioned at distances of between 2 to 10 centimeters from the edges of windshield 11..
  • AM and FM antennas l2 and 13 may assume various shapes. As illustrated in FIG. 2, AM antenna 12 may have two principal arm portions extending parallel to the upper edge of windshield l l and two leg portions extending vertically down the center of windshield 11. All portions of the antenna are, of course, interconnected to'form acontinuous conductive line. Similarly, FM antenna 13 may consist of two principal arm portions extending primarily along the bottom edge of windshield 11, with wing portions thereof bent upwardly, following the edge contour of windshield 1 l.
  • the PM antenna 13 is in general shorter than the AM antenna 12, and it is sometimes preferable that the FM antenna 13 be oriented at least in part in a vertical direction.
  • the AM antenna 12, on the other hand, is preferably relatively long in length and need not be oriented in a vertical direction.
  • an AM antenna 12 is shown with its principal arm portions extending along the base of a windshield 11.
  • the antenna 12 includes wing portions at the ends of each of the arm portions thereof, which are bent upwardly in a vertical direction, following the edge contours of windshield 11.
  • An FM antenna 13 is also shown formed of a generally U-shaped conductor or conductive strip consisting primarily of two arm portions-extending vertically up the center of windshield 11.
  • F M antenna 13 may consist of a short vertical conductive line having many horizontal branch lines extending therefrom.
  • AM antenna 12 may be in the form of a spiral line, a net shape (a plurality of intersecting perpendicular lines), or a base conductive line having many branch lines extending therefrom.
  • a TV antenna preprinted on window glass with a configuration similar to the FM antenna configurations described above.
  • AM antenna 12 and FM antenna 13 may be coupled to a car radio receiver 14 through lead wires 17 and 16, respectively.
  • Lead wires 16 and 17 may be ordinary shielded cables, as is well known to those skilled in the art (see, for example 0.8. Pat. to Koschmieder, No. 2,213,282, issued Sept. 3, 1940).
  • Selective use of either AM antenna 12 or FM antenna 13 is made possible by the use of a selector switch 15.
  • Selector switch may be interconnected with radio receiver 14 such that whenever the radio receiver is switched to receive FM broadcasts, FM antenna 13 is automatically interconnected and, whenever receiver 14 is switched to receive AM broadcasts, AM antenna 12 is utilized.
  • AM antenna 12 and FM antenna 13 are also possible to permanently interconnect AM antenna 12 and FM antenna 13 at a convenient position on windshield 11 such that only a single lead wire is necessary to couple the interconnected antennas to radio receiver 14. If this is done, the AM and FM antennas still function separately, since each antenna is designed to be more sensitive in the frequency range in which it is intended to operate. In this case, the need for selector switch 15 is eliminated.
  • antennas 12 and 13 are also equally possible to install antennas 12 and 13 in the rear or side windows of an automobile. It is also within the scope of the teachings of the instant invention to use an antenna of the type described either in or on the windows of a house or of a building.
  • fine, opaque wires may be set into the windshield of an automobile, for example, in a pattern that may also be used for sighting the road in front of the automobile.
  • a window glass antenna particularly suitable for use with automotive vehicles comprising:
  • a first antenna element designed to receive only FM radio broadcasts
  • a second antenna element separate from said first antenna element and designed to receive only AM radio broadcasts
  • said first and second antenna elements formed into different respective shapes and placed on a glass sheet adapted to be mounted to an automotive vehicle body
  • said first and second antenna elements positioned on said glass sheet so as to minimize the capacitive effect of said automotive vehicle body on said antenna elements
  • one of said first and second antenna elements including a pair of symmetrical arms which extend substantially parallel to a lower edge of said glass sheet,-each of said symmetrical arms including an upturned end portion;
  • the other of said first and second antenna elements positioned substantially at the center of said glass sheet and extending from said lower edge thereof toward an upper edge thereof terminating in a pair of symmetrical arms which extend substantially parallel to said upper edge.
  • said means coupled to said first and second antenna elements for connecting said elements to a radio receiver, said means including a first lead wire coupled to said first antenna element,
  • a selector switch coupled to said first and second lead wires for selectively interconnecting said first or second antenna element to said radio receiver.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Aerials (AREA)
  • Joining Of Glass To Other Materials (AREA)
US00094325A 1969-12-09 1970-12-02 Window glass antenna Expired - Lifetime US3728732A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1969116410U JPS5033076Y1 (fr) 1969-12-09 1969-12-09

Publications (1)

Publication Number Publication Date
US3728732A true US3728732A (en) 1973-04-17

Family

ID=14686359

Family Applications (1)

Application Number Title Priority Date Filing Date
US00094325A Expired - Lifetime US3728732A (en) 1969-12-09 1970-12-02 Window glass antenna

Country Status (5)

Country Link
US (1) US3728732A (fr)
JP (1) JPS5033076Y1 (fr)
DE (1) DE2060418C3 (fr)
FR (1) FR2070786B1 (fr)
GB (1) GB1314397A (fr)

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810180A (en) * 1970-05-15 1974-05-07 Saint Gobain Motor vehicle windshield with incorporated antenna
US3845489A (en) * 1970-09-16 1974-10-29 Saint Gobain Window antenna
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
US4329691A (en) * 1980-09-30 1982-05-11 General Motors Corporation AM-FM Broadband vehicle windshield mounted radio antenna
US4707701A (en) * 1984-10-26 1987-11-17 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4717922A (en) * 1984-11-06 1988-01-05 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4717921A (en) * 1984-11-15 1988-01-05 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4723127A (en) * 1984-12-12 1988-02-02 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4754284A (en) * 1984-11-15 1988-06-28 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4789866A (en) * 1984-11-08 1988-12-06 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4792807A (en) * 1985-03-27 1988-12-20 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4794397A (en) * 1984-10-13 1988-12-27 Toyota Jidosha Kabushiki Kaisha Automobile antenna
US4804967A (en) * 1985-10-29 1989-02-14 Toyota Jidosha Kabushiki Kaisha Vehicle antenna system
US4804968A (en) * 1985-08-09 1989-02-14 Toyota Jidosha Kabushiki Kaisha Vehicle antenna system
US4804966A (en) * 1984-10-29 1989-02-14 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4806942A (en) * 1985-06-10 1989-02-21 Toyota Jidosha Kabushiki Kaisha Automobile TV antenna system
US4811024A (en) * 1984-10-17 1989-03-07 Toyota Jidosha Kabushiki Kaisha Automobile antenna
US4816837A (en) * 1985-08-01 1989-03-28 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4819001A (en) * 1984-11-26 1989-04-04 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4821042A (en) * 1985-06-28 1989-04-11 Toyota Jidosha Kabushiki Kaisha Vehicle antenna system
US4823142A (en) * 1985-06-21 1989-04-18 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4845505A (en) * 1987-02-13 1989-07-04 Toyota Jidosha Kabushiki Kaisha Automobile antenna system for diversity reception
US4849766A (en) * 1986-07-04 1989-07-18 Central Glass Company, Limited Vehicle window glass antenna using transparent conductive film
US5083133A (en) * 1988-03-24 1992-01-21 Pioneer Electronic Corporation Window glass antenna for vehicle
US5581263A (en) * 1993-08-20 1996-12-03 Nippon Sheet Glass Co., Ltd. Window glass antenna with optimized AM and FM equivalent antennas
US5640167A (en) * 1995-01-27 1997-06-17 Ford Motor Company Vehicle window glass antenna arrangement
US6008766A (en) * 1992-11-27 1999-12-28 Nippon Sheet Glass Co., Ltd. Rear window glass antenna for automobiles
US6377221B1 (en) * 1999-08-31 2002-04-23 Fuba Automotive Gmbh & Co. Kg Window antenna for a motor vehicle
US20060022880A1 (en) * 2004-07-28 2006-02-02 Chiang Kuo C Multi-band antenna
US20100026590A1 (en) * 2004-07-28 2010-02-04 Kuo-Ching Chiang Thin film multi-band antenna
USD747298S1 (en) * 2014-01-22 2016-01-12 Agc Automotive Americas R&D, Inc. Antenna
US9406996B2 (en) 2014-01-22 2016-08-02 Agc Automotive Americas R&D, Inc. Window assembly with transparent layer and an antenna element
USD771602S1 (en) 2014-01-22 2016-11-15 Agc Automotive Americas R&D, Inc. Antenna
USD774024S1 (en) 2014-01-22 2016-12-13 Agc Automotive Americas R&D, Inc. Antenna
US9806398B2 (en) 2014-01-22 2017-10-31 Agc Automotive Americas R&D, Inc. Window assembly with transparent layer and an antenna element
US20190319334A1 (en) * 2018-04-12 2019-10-17 Pittsburgh Glass Works, Llc Multi-band window antenna

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE383447B (sv) * 1970-12-08 1976-03-08 Saint Gobain Antennforsedd fordonsfonsterruta
JPS5512481Y2 (fr) * 1974-07-16 1980-03-19
US5220336A (en) * 1990-02-28 1993-06-15 Central Glass Company, Limited Vehicle window glass antenna for transmission and reception of ultrashort waves

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2654030A (en) * 1950-10-10 1953-09-29 Cuvilliez Henri Television antenna system
US2838755A (en) * 1952-07-03 1958-06-10 Philco Corp Cabinet antenna system
US3261019A (en) * 1964-04-13 1966-07-12 John E Lundy Picture antenna for television sets
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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE730131C (de) * 1940-07-28 1943-01-07 Zeiss Ikon Ag Antenne fuer Fahrzeuge, bei denen eine oder mehrere am Fahrzeug vorhandene Fensterscheiben als Antennentraeger benutzt werden
GB647665A (en) * 1948-03-16 1950-12-20 Marconi Wireless Telegraph Co Improvements in or relating to aerial systems for use on aircraft
US3414902A (en) * 1965-12-06 1968-12-03 Ppg Industries Inc Laminated windshield with radio antenna

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2654030A (en) * 1950-10-10 1953-09-29 Cuvilliez Henri Television antenna system
US2838755A (en) * 1952-07-03 1958-06-10 Philco Corp Cabinet antenna system
US3261019A (en) * 1964-04-13 1966-07-12 John E Lundy Picture antenna for television sets
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

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810180A (en) * 1970-05-15 1974-05-07 Saint Gobain Motor vehicle windshield with incorporated antenna
US3845489A (en) * 1970-09-16 1974-10-29 Saint Gobain Window antenna
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
US4329691A (en) * 1980-09-30 1982-05-11 General Motors Corporation AM-FM Broadband vehicle windshield mounted radio antenna
US4794397A (en) * 1984-10-13 1988-12-27 Toyota Jidosha Kabushiki Kaisha Automobile antenna
US4811024A (en) * 1984-10-17 1989-03-07 Toyota Jidosha Kabushiki Kaisha Automobile antenna
US4707701A (en) * 1984-10-26 1987-11-17 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4804966A (en) * 1984-10-29 1989-02-14 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4717922A (en) * 1984-11-06 1988-01-05 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4789866A (en) * 1984-11-08 1988-12-06 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4717921A (en) * 1984-11-15 1988-01-05 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4754284A (en) * 1984-11-15 1988-06-28 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4819001A (en) * 1984-11-26 1989-04-04 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4723127A (en) * 1984-12-12 1988-02-02 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4792807A (en) * 1985-03-27 1988-12-20 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4806942A (en) * 1985-06-10 1989-02-21 Toyota Jidosha Kabushiki Kaisha Automobile TV antenna system
US4823142A (en) * 1985-06-21 1989-04-18 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4821042A (en) * 1985-06-28 1989-04-11 Toyota Jidosha Kabushiki Kaisha Vehicle antenna system
US4816837A (en) * 1985-08-01 1989-03-28 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4804968A (en) * 1985-08-09 1989-02-14 Toyota Jidosha Kabushiki Kaisha Vehicle antenna system
US4804967A (en) * 1985-10-29 1989-02-14 Toyota Jidosha Kabushiki Kaisha Vehicle antenna system
US4849766A (en) * 1986-07-04 1989-07-18 Central Glass Company, Limited Vehicle window glass antenna using transparent conductive film
US4845505A (en) * 1987-02-13 1989-07-04 Toyota Jidosha Kabushiki Kaisha Automobile antenna system for diversity reception
US5083133A (en) * 1988-03-24 1992-01-21 Pioneer Electronic Corporation Window glass antenna for vehicle
US6008766A (en) * 1992-11-27 1999-12-28 Nippon Sheet Glass Co., Ltd. Rear window glass antenna for automobiles
US5581263A (en) * 1993-08-20 1996-12-03 Nippon Sheet Glass Co., Ltd. Window glass antenna with optimized AM and FM equivalent antennas
US5640167A (en) * 1995-01-27 1997-06-17 Ford Motor Company Vehicle window glass antenna arrangement
US5936585A (en) * 1995-01-27 1999-08-10 Ford Motor Company Vehicle window glass antenna arrangement
US6377221B1 (en) * 1999-08-31 2002-04-23 Fuba Automotive Gmbh & Co. Kg Window antenna for a motor vehicle
US20060022880A1 (en) * 2004-07-28 2006-02-02 Chiang Kuo C Multi-band antenna
US7388549B2 (en) * 2004-07-28 2008-06-17 Kuo Ching Chiang Multi-band antenna
US20100026590A1 (en) * 2004-07-28 2010-02-04 Kuo-Ching Chiang Thin film multi-band antenna
US9406996B2 (en) 2014-01-22 2016-08-02 Agc Automotive Americas R&D, Inc. Window assembly with transparent layer and an antenna element
USD747298S1 (en) * 2014-01-22 2016-01-12 Agc Automotive Americas R&D, Inc. Antenna
USD771602S1 (en) 2014-01-22 2016-11-15 Agc Automotive Americas R&D, Inc. Antenna
USD774024S1 (en) 2014-01-22 2016-12-13 Agc Automotive Americas R&D, Inc. Antenna
US9647319B2 (en) 2014-01-22 2017-05-09 Agc Automotive Americas R&D, Inc Window assembly with transparent layer and an antenna element
USD787476S1 (en) 2014-01-22 2017-05-23 Agc Automotive Americas R&D, Inc. Antenna
USD787475S1 (en) 2014-01-22 2017-05-23 Agc Automotive Americas R&D, Inc. Antenna
USD788078S1 (en) 2014-01-22 2017-05-30 Agc Automotive Americas R&D, Inc. Antenna
US9806398B2 (en) 2014-01-22 2017-10-31 Agc Automotive Americas R&D, Inc. Window assembly with transparent layer and an antenna element
US20190319334A1 (en) * 2018-04-12 2019-10-17 Pittsburgh Glass Works, Llc Multi-band window antenna
US10811760B2 (en) * 2018-04-12 2020-10-20 Pittsburgh Glass Works, Llc Multi-band window antenna

Also Published As

Publication number Publication date
FR2070786A1 (fr) 1971-09-17
DE2060418B2 (de) 1973-06-14
GB1314397A (en) 1973-04-18
DE2060418C3 (de) 1974-01-10
DE2060418A1 (de) 1971-06-16
FR2070786B1 (fr) 1976-05-28
JPS5033076Y1 (fr) 1975-09-26

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