发明名称 |
Accurate power detection for a multi-stage amplifier |
摘要 |
A multi-stage amplifier is coupled with a power detector. The multi-stage amplifier includes a plurality of amplifier stages in series, with a signal path extending through them. The power detector is coupled to an interior node of the amplifier along the signal path, and is operable to sample a first signal being transmitted on the signal path. The power detector outputs a second signal reflective of a power of the first signal. In one embodiment, the interior node is in a matching network of the amplifier disposed between a first amplifier stage and a final amplifier stage of the amplifier. The second signal may be used in a feedback network to adjust an amount of amplification of the first signal by the amplifier.
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申请公布号 |
US6989712(B2) |
申请公布日期 |
2006.01.24 |
申请号 |
US20040803850 |
申请日期 |
2004.03.17 |
申请人 |
TRIQUINT SEMICONDUCTOR, INC. |
发明人 |
LIU LI;SOUCHUNS CHRISTOPHER C.;LI PING;HENDERSON GREGORY N. |
分类号 |
H03G3/20;H03F;H04B17/00 |
主分类号 |
H03G3/20 |
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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