发明名称 |
Continuous closed-loop power control system including modulation injection in a wireless transceiver power amplifier |
摘要 |
A single continuous closed-loop power control feedback system provides seamless power control for a power amplifier and also enables an AM signal to be injected into the power amplifier through the power amplifiers' control port. The AM signal is developed by an I/Q modulator and supplied to a comparator located in the power control loop. By using leakage from the power amplifier as feedback to a phase locked loop during initial power amplifier power ramp-up, the single continuous closed-loop power control system provides continuous feedback to the phase locked loop during the entire power amplification ramp-up period and eliminates the need for multiple feedback loops.
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申请公布号 |
US7218951(B2) |
申请公布日期 |
2007.05.15 |
申请号 |
US20040885162 |
申请日期 |
2004.07.06 |
申请人 |
SKYWORKS SOLUTIONS, INC. |
发明人 |
ROZENBLIT DMITRIY;DAMGAARD MORTEN;FAGG RUSSELL J.;DOMINO WILLIAM J. |
分类号 |
H03G3/30;H04B7/00;H03F1/02;H04B1/04;H04B7/005 |
主分类号 |
H03G3/30 |
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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