发明授权
- 专利标题： Power amplification device, transmitter, and power amplification control method
- 专利标题（中）： 功率放大器，发射器和功率放大控制方法
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申请号： US13405441申请日： 2012-02-27
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公开(公告)号： US08525592B2公开(公告)日： 2013-09-03
- 发明人: Nobukazu Fudaba , Hiroyoshi Ishikawa , Yuichi Utsunomiya , Kazuo Nagatani
- 申请人： Nobukazu Fudaba , Hiroyoshi Ishikawa , Yuichi Utsunomiya , Kazuo Nagatani
- 申请人地址： JP Kawasaki
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JP Kawasaki
- 代理机构： Fujitsu Patent Center
- 优先权： JP2011-053560 20110310
- 主分类号： H03F1/26
- IPC分类号： H03F1/26
摘要：
A power amplifier amplifies a signal. An error signal calculating unit calculates an error signal in accordance with an input signal and an output from the power amplifier. A distortion compensation unit performs predistortion on the input signal by using distortion compensation coefficients that are generated in accordance with a plurality of delay signals obtained by giving different amounts of delay to the input signal and by using an error signal and outputs the input signal subjected to the predistortion to the signal amplifying unit. A tap interval control unit controls the delay intervals of the delay signals that are used for the predistortion performed by the distortion compensation unit in accordance with signal correlation information calculated from the input signal.
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