发明名称 |
Predistortion circuit, low-distortion power amplifier, and control methods therefor |
摘要 |
An amplitude frequency characteristic adjustment circuit 106 is provided downstream of and connected to a distortion generation circuit 105. An amplitude difference between low-frequency-side and high-frequency-side distortion voltages is adjusted by the amplitude frequency characteristic adjustment circuit 106, and then their amplitudes and phases are adjusted by a vector adjustment circuit 107. This configuration makes it possible to suppress simultaneously both of low-frequency-side and high-frequency-side distortion voltages of a distortion generated by a wide-band class-AB power amplifier even if they are different in amplitude and phase.
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申请公布号 |
US2001048346(A1) |
申请公布日期 |
2001.12.06 |
申请号 |
US20010865692 |
申请日期 |
2001.05.29 |
申请人 |
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发明人 |
MATSUURA TORU;ISHIDA KAORU;SAKAKURA MAKOTO;FUJIWARA SEIJI |
分类号 |
H03F1/26;H03F1/32;(IPC1-7):H03F1/26 |
主分类号 |
H03F1/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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