05072230 is referenced by 38 patents and cites 14 patents.

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.

Title
Mobile telescoping whip antenna with impedance matched feed sections
Application Number
7/249556
Publication Number
5072230
Application Date
September 26, 1988
Publication Date
December 10, 1991
Inventor
Kazuo Takayama
Kobe
JP
Toshihiko Kondo
Kobe
JP
Kiyoshi Taniyoshi
Kobe
JP
Agent
Wenderoth Lind & Ponack
Assignee
Fujitsu Ten
JP
IPC
H01Q 1/32
H01Q 1/10
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