Communications: radio wave antennas – Antennas – Rod type
Patent
1990-10-22
1993-06-15
Hille, Rolf
Communications: radio wave antennas
Antennas
Rod type
343903, 343715, H01Q 110
Patent
active
052203417
ABSTRACT:
An telescoping antenna includes a lower antenna portion and an upper antenna portion to be telescoped into the lower antenna portion. The lower antenna portion includes a cylindrical conductor having an inner cavity for accommodating the upper antenna portion and a coaxial feeder cable. A cylindrical member, which is electrically connected to the cylindrical conductor and the coaxial feeder cable, is provided in the cavity so that a first leakage current is prevented from flowing into the coaxial feeder cable from the cylindrical conductor and that a second leakage current is prevented from flowing into the lower antenna portion from the upper antenna portion.
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patent: 4496953 (1985-01-01), Spinks, Jr. et al.
patent: 4527168 (1985-07-01), Edwards
patent: 4658260 (1987-04-01), Myer
patent: 4725846 (1988-02-01), Hendershot
patent: 4734703 (1988-03-01), Nakase et al.
patent: 4847629 (1989-07-01), Shimazaki
patent: 4864322 (1989-09-01), Yamamoto et al.
patent: 4958382 (1990-09-01), Imanishi
patent: 4968991 (1990-11-01), Yamazaki
patent: 5072230 (1991-12-01), Taniyoshi et al.
Hille Rolf
Le Hoang-anh
Nippondenso Co. Ltd.
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