发明名称 |
Envelope limiting for polar modulators |
摘要 |
Envelope limiting for a polar modulator. A system is provided that intelligently compresses the amplitude modulation in a polar modulator so that it can be implemented with a single-stage variable gain amplifier. Limiting the amplitude modulation range on the low side prevents collapse of the transmit signal's time-varying envelope and eases circuit implementation. Limiting the amplitude modulation range on the high side reduces the peak-to-average ratio of the waveform and thereby improves the efficiency of the radio transmitter.
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申请公布号 |
US7412213(B1) |
申请公布日期 |
2008.08.12 |
申请号 |
US20060538396 |
申请日期 |
2006.10.03 |
申请人 |
SEQUOIA COMMUNICATIONS |
发明人 |
GROE JOHN B.;HARDIN CARL THOMAS;SHEBA MAHBUBA |
分类号 |
H04B1/02;H03C3/38;H03C5/00;H03F1/02;H03G3/30;H03G7/06;H04B1/04;H04L27/36 |
主分类号 |
H04B1/02 |
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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