发明名称 |
POLAR LOOP RADIO FREQUENCY (RF) TRANSMITTER HAVING INCREASED DYNAMIC RANGE AMPLITUDE CONTROL |
摘要 |
A closed loop power control system for a radio frequency (RF) transmitter comprises a first variable gain element located in a power control loop and configured to receive a power level signal and an inverse representation of a power control signal, a second variable gain element located in the power control loop and configured to receive an error signal and the power control signal, and a third variable gain element configured to receive an amplitude modulated (AM) signal and the power control signal, the third variable gain element having a gain characteristic configured to operate to reduce the gain applied to the AM signal when the power control signal falls below a minimum predetermined value, and to provide the AM signal as a reference signal. |
申请公布号 |
WO2007008873(A2) |
申请公布日期 |
2007.01.18 |
申请号 |
WO2006US26849 |
申请日期 |
2006.07.12 |
申请人 |
SKYWORKS SOLUTIONS, INC.;ROZENBLIT, DMITRIY;SOWLATI, TIRDAD;DAMGAARD, MORTEN |
发明人 |
ROZENBLIT, DMITRIY;SOWLATI, TIRDAD;DAMGAARD, MORTEN |
分类号 |
H03D1/24;H04L25/49;H04L27/04 |
主分类号 |
H03D1/24 |
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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