05258728 is referenced by 117 patents and cites 33 patents.

A branching filter, which is operatively connected between an antenna and a communication device which utilizes different frequency bands, suppresses a mutual interference between signals transmitted to and from the communication device. An antenna circuit, which is operatively connected between the antenna, or a branching filter, and the communication device, converts an impedance with respect to a signal in a frequency band having a lower frequency, and reduces loss resulting from a capacitive antenna impedance.

Title
Antenna circuit for a multi-band antenna
Application Number
249556
Publication Number
5258728
Application Date
May 9, 1991
Publication Date
November 2, 1993
Inventor
Kazuo Takayama
Kobe
JP
Toshihiko Kondo
Kobe
JP
Kiyoshi Taniyoshi
Kobe
JP
Agent
Wenderoth Lind & Ponack
Assignee
Fujitsu Ten
JP
IPC
H03H 7/38
H03H 7/446
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