发明专利
- 专利标题： High frequency amplifier circuit
- 专利标题（中）： 高频放大器电路
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申请号： JP2005160479申请日： 2005-05-31
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公开(公告)号： JP2006339888A公开(公告)日： 2006-12-14
- 发明人: TSUJITA MASAYUKI , YAMASHITA KAZUO , TAKAHASHI HIDENORI , KASHIMURA KAZUNORI
- 申请人： Japan Radio Co Ltd , 日本無線株式会社
- 专利权人： Japan Radio Co Ltd,日本無線株式会社
- 当前专利权人： Japan Radio Co Ltd,日本無線株式会社
- 优先权： JP2005160479 2005-05-31
- 主分类号： H03F1/32
- IPC分类号： H03F1/32 ; H03F1/02 ; H03F3/60
摘要：
PROBLEM TO BE SOLVED: To provide a high frequency amplifier circuit which stably reduces the distortion of output signals when combining and outputting signals after amplifying them.
SOLUTION: An error signal extractor circuit 56 couples an input signal Sin(t) taken out of a coupler 52 with a high frequency output signal Sout(t) taken out of a coupler 54 to extract an error signal component e(t) remaining in the high frequency output signal Sout(t). A synchronous detector 58 performs synchronous detection of the high frequency output signal Sout(t) after coupling by the error signal extractor circuit 56 in phase and orthogonal phase, using an error signal e(t) taken out of a signal separator 12 as a reference signal, thereby controlling the gain of an amplitude adjuster 40 and the phase quantity of a phase adjuster 42, based on detected voltages generated by the coherent detection in phase and orthogonal phase.
COPYRIGHT: (C)2007,JPO&INPIT
SOLUTION: An error signal extractor circuit 56 couples an input signal Sin(t) taken out of a coupler 52 with a high frequency output signal Sout(t) taken out of a coupler 54 to extract an error signal component e(t) remaining in the high frequency output signal Sout(t). A synchronous detector 58 performs synchronous detection of the high frequency output signal Sout(t) after coupling by the error signal extractor circuit 56 in phase and orthogonal phase, using an error signal e(t) taken out of a signal separator 12 as a reference signal, thereby controlling the gain of an amplitude adjuster 40 and the phase quantity of a phase adjuster 42, based on detected voltages generated by the coherent detection in phase and orthogonal phase.
COPYRIGHT: (C)2007,JPO&INPIT
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