Antenna device for an automobile

Details Antenna device for an automobile Antenna device for an automobile

1991-04-01

1992-11-17

Hille, Rolf

Communications: radio wave antennas

Antennas

Rod type

343715, 343749, H01Q 1100, H01Q 5000

Patent

active

051647397

ABSTRACT:
An antenna device is comprised of a base member fixed to an automobile body, a first mast member, a second mast member and a third mast member. The third mast member is supported by the base member, the second mast member is supported by the third mast member and includes a plurality of telescopic elements and the first mast member is supported by one end of the second mast member and located away from the automobile body. A feeder conductor is connected to the first mast member through an impedance matching coil with the feeder conductor and the coil being molded in a resin elevation member. The resin elevation member extends through the second and third mast members and has an enlarged portion which surrounds the coil. The enlarged portion of the resin elevation member is in engagement with the second mast member and elevates the second mast member upon movement away from the automobile body.

REFERENCES:
patent: 4200874 (1980-04-01), Harada
patent: 4675687 (1987-06-01), Elliot
patent: 4734703 (1988-03-01), Nakase et al.
patent: 4742360 (1988-05-01), Carolus
patent: 4968991 (1990-11-01), Yamazaki
patent: 5017935 (1991-05-01), Hayashi et al.

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