Title:
HIGH FREQUENCY AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2002/078181
Kind Code:
A1
Abstract:
A high frequency amplifier comprising an amplifier (1) for amplifying an input signal, an input signal discriminating circuit (6) for issuing instructions to detect the peak and average powers of the input signal to calculate the peak-average power ratio, to make a comparison between the calculated peak-average power ratio and a predetermined reference value, and to control a gate voltage to be fed to the amplifier (1) on the basis of the result of the comparison, and a gate voltage control circuit (7) for controlling a gate voltage to be fed to the amplifier (1) on the basis of instructions from the input signal discriminating circuit (6) in such a manner that even if the peak-average power ratio of the input signal varies, the distortion power fed from the amplifier (1) does not vary.
Inventors:
HORIGUCHI KENICHI (JP)
NAKAYAMA MASATOSHI (JP)
IKEDA YUKIO (JP)
ISHIDA OSAMI (JP)
SAKAI YUUJI (JP)
TOTANI KAZUYUKI (JP)
NAKAYAMA MASATOSHI (JP)
IKEDA YUKIO (JP)
ISHIDA OSAMI (JP)
SAKAI YUUJI (JP)
TOTANI KAZUYUKI (JP)
Application Number:
PCT/JP2001/004287
Publication Date:
October 03, 2002
Filing Date:
May 22, 2001
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
HORIGUCHI KENICHI (JP)
NAKAYAMA MASATOSHI (JP)
IKEDA YUKIO (JP)
ISHIDA OSAMI (JP)
SAKAI YUUJI (JP)
TOTANI KAZUYUKI (JP)
HORIGUCHI KENICHI (JP)
NAKAYAMA MASATOSHI (JP)
IKEDA YUKIO (JP)
ISHIDA OSAMI (JP)
SAKAI YUUJI (JP)
TOTANI KAZUYUKI (JP)
International Classes:
H03F1/32; H03F3/189; H03G3/30; (IPC1-7): H03G3/20
Foreign References:
| JP2001024455A | 2001-01-26 | |||
| JPS63149909A | 1988-06-22 | |||
| JP2000004173A | 2000-01-07 |
Attorney, Agent or Firm:
Tazawa, Hiroaki (Kasumigaseki 3-chome. Chiyoda-ku, Tokyo, JP)
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