Title:
FEEDFORWARD MULTI-TERMINAL POWER-SYNTHESIZING POWER AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2001/022574
Kind Code:
A1
Abstract:
A feedforward amplifier circuit (40¿n?) having a distortion detecting circuit and a distortion eliminating circuit is constituted between each input port (IP¿n?) and output port (OP¿n?) of a multi-terminal power-synthesizing power amplifier in which a main amplifier (4M) is installed for each system between an input-side multi-terminal power synthesizer (3) and an output-side multi-terminal power synthesizer (5).
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Inventors:
SUZUKI YOSHINORI (JP)
HIROTA TETSUO (JP)
NOJIMA TOSHIO (JP)
HIROTA TETSUO (JP)
NOJIMA TOSHIO (JP)
Application Number:
PCT/JP2000/006316
Publication Date:
March 29, 2001
Filing Date:
September 14, 2000
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
SUZUKI YOSHINORI (JP)
HIROTA TETSUO (JP)
NOJIMA TOSHIO (JP)
SUZUKI YOSHINORI (JP)
HIROTA TETSUO (JP)
NOJIMA TOSHIO (JP)
International Classes:
H01Q3/26; H01Q3/40; H03F1/32; H03F3/21; H03F3/24; H03F3/60; H04B1/00; H04B1/04; (IPC1-7): H03F1/32; H03F3/68; H01Q3/26; H04B1/48
Foreign References:
| JPH10209777A | 1998-08-07 | |||
| EP0552059A1 | 1993-07-21 | |||
| EP0466123A1 | 1992-01-15 | |||
| US5055798A | 1991-10-08 | |||
| JPH01198809A | 1989-08-10 | |||
| US4618831A | 1986-10-21 | |||
| EP0405372A1 | 1991-01-02 | |||
| JPH04274619A | 1992-09-30 |
Other References:
See also references of EP 1152523A4
Attorney, Agent or Firm:
Kusano, Takashi (Shinjuku 4-chome Shinjuku-ku, Tokyo, JP)
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