POLAR LOOP RADIO FREQUENCY (RF) TRANSMITTER HAVING INCREASED DYNAMIC RANGE AMPLITUDE CONTROL |
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| 申请号 | PCT/US2006026849 | 申请日 | 2006-07-12 | 公开(公告)号 | WO2007008873A3 | 公开(公告)日 | 2007-03-22 |
| 申请人 | SKYWORKS SOLUTIONS INC; ROZENBLIT DMITRIY; SOWLATI TIRDAD; DAMGAARD MORTEN; | 发明人 | ROZENBLIT DMITRIY; SOWLATI TIRDAD; DAMGAARD MORTEN; | ||||
| 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. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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