Communications: radio wave antennas – Antennas – With vehicle
Patent
1988-09-26
1991-12-10
Wimer, Michael C.
Communications: radio wave antennas
Antennas
With vehicle
343722, 343903, H01Q 110, H01Q 132
Patent
active
050722301
ABSTRACT:
An antenna element including a loading coil is telescopically extendable and retractable from within a housing tube. A characteristic impedance of a transmission line from a lower end part of the antenna element to a cable is equal to one of a cable. A part of the loading coil is reinforced. A branching filter, which is operatively connected between the antenna and a communication device using a different frequency band, suppresses a mutual interference between signals for the communication device. An antenna circuit, which is operatively connected between the antenna or a branching filter and the communication device, converts an impedance of a lower part in a frequency band, and reduces a loss due to a capacitive antenna impedance.
REFERENCES:
patent: 4527168 (1985-07-01), Edwards
patent: 4567487 (1986-01-01), Creaser, Jr.
patent: 4584587 (1986-04-01), Ireland
patent: 4658260 (1987-04-01), Myer
patent: 4660049 (1987-04-01), Shinkawa
patent: 4675687 (1987-06-01), Elliott
patent: 4712965 (1988-01-01), Elliot
patent: 4734703 (1988-03-01), Nakase et al.
patent: 4748450 (1988-05-01), Hines et al.
patent: 4829317 (1989-05-01), Shinkawa
patent: 4839660 (1989-06-01), Hadzoglou
Kondo Toshihiko
Takayama Kazuo
Taniyoshi Kiyoshi
Fujitsu Ten Limited
Wimer Michael C.
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