GB1538623A - Hf choke coil arrangements - Google Patents

Hf choke coil arrangements

Info

Publication number
GB1538623A
GB1538623A GB4670177A GB4670177A GB1538623A GB 1538623 A GB1538623 A GB 1538623A GB 4670177 A GB4670177 A GB 4670177A GB 4670177 A GB4670177 A GB 4670177A GB 1538623 A GB1538623 A GB 1538623A
Authority
GB
United Kingdom
Prior art keywords
waveband
long
losses
antenna
induction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4670177A
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.)
TOHOKA METAL IND
Denso Ten Ltd
Toyota Motor Corp
Original Assignee
TOHOKA METAL IND
Denso Ten Ltd
Toyota Motor Corp
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 TOHOKA METAL IND, Denso Ten Ltd, Toyota Motor Corp filed Critical TOHOKA METAL IND
Publication of GB1538623A publication Critical patent/GB1538623A/en
Expired legal-status Critical Current

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
    • H01Q1/1278—Supports; Mounting means for mounting on windscreens in association with heating wires or layers

Abstract

In the case of this antenna system, the resistance wires (12) of a window heating system (11) are used as an antenna. This allows broadcast-radio reception in the long-waveband (150-275 kHz) in addition to the medium-waveband and short-waveband. For this purpose, the RF inductor coil (31), which is connected between the vehicle battery (17) and the resistance wires (12), has a magnetic core which is composed of two different cores (311, 312). The two cores have different losses in the long-waveband, with the aim of better suppressing interference in the long-waveband. One (311) of the magnetic cores is of a type having low losses, while the other core (312) has relatively large losses in the long-waveband. As a result of this construction of the RF inductor coil (31), the losses are at a maximum in the long-waveband, while the induction value does not change. This results from the fact that the characteristic of the frequency/antenna gain has a flat response in the long-waveband when the Q value of the resonant circuit formed from the antenna capacitance and the induction of the RF induction coil is reduced. <IMAGE>
GB4670177A 1976-11-09 1977-11-09 Hf choke coil arrangements Expired GB1538623A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13428576A JPS5359344A (en) 1976-11-09 1976-11-09 Antenna

Publications (1)

Publication Number Publication Date
GB1538623A true GB1538623A (en) 1979-01-24

Family

ID=15124699

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4670177A Expired GB1538623A (en) 1976-11-09 1977-11-09 Hf choke coil arrangements

Country Status (4)

Country Link
JP (1) JPS5359344A (en)
CH (1) CH624794A5 (en)
DE (1) DE2746419A1 (en)
GB (1) GB1538623A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001877A1 (en) * 1981-11-16 1983-05-26 Hamlin, Inge Radio communication system
US10411507B2 (en) 2015-07-14 2019-09-10 Infineon Technologies Ag Circuit arrangement

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57188102A (en) * 1981-05-15 1982-11-19 Asahi Glass Co Ltd Glass antenna for automobile
US4654669A (en) * 1983-12-20 1987-03-31 Bsh Electronics, Ltd. Electrical signal separating device for window antenna having isolating and matching circuitry
US4903035A (en) * 1983-12-20 1990-02-20 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry
DE3406580A1 (en) * 1984-02-21 1985-08-22 Robert Bosch Gmbh, 7000 Stuttgart Heated-window antenna
JPH03103619U (en) * 1990-02-08 1991-10-28
JPH0758534A (en) * 1993-08-20 1995-03-03 Nippon Sheet Glass Co Ltd Windowpane antenna

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1159527C2 (en) * 1958-03-28 1974-05-30 Gustav Guanella Dipl Ing Device for suppressing currents flowing in the same direction in a double-conductor arrangement
NL291330A (en) * 1962-04-19
US3484584A (en) * 1968-07-23 1969-12-16 Ppg Industries Inc Combination of electrically heated transparent window and antenna
DE7043934U (en) * 1970-11-27 1971-12-09 Siemens Ag Radio interference suppression choke against impulse-like interference voltages
GB1520030A (en) * 1975-11-21 1978-08-02 Bsh Electronics Manchester Ltd Electrical device to enable the heating element of an electrically heated motor vehicle window to be used as a radio aerial

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001877A1 (en) * 1981-11-16 1983-05-26 Hamlin, Inge Radio communication system
US4507646A (en) * 1981-11-16 1985-03-26 P.S. Paging System, A.B. Radio communication system
US10411507B2 (en) 2015-07-14 2019-09-10 Infineon Technologies Ag Circuit arrangement

Also Published As

Publication number Publication date
JPS5359344A (en) 1978-05-29
DE2746419C2 (en) 1987-05-07
JPS5724681B2 (en) 1982-05-25
CH624794A5 (en) 1981-08-14
DE2746419A1 (en) 1978-05-11

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19971108