发明名称 |
Power amplifier saturation detection and compensation |
摘要 |
A system for detecting and compensating for a saturation condition of a power amplifier where an error signal is produced by differencing a signal representative of or derived from a control signal for controlling the shape of the output of the power amplifier and a signal representative of or derived from the output of the power amplifier. An integrator integrates the error signal to produce a cumulative error signal. A detection circuit detects a saturation condition when the value of the cumulative error equals or exceeds a predetermined value determined during device calibration. Upon the detection of a saturation condition, a compensation circuit derives a compensation value by multiplying the value of the error signal at the time saturation is detected by a predetermined constant, and subtracts this value from the control signal. The input to the power amplifier is derived from the adjusted control signal.
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申请公布号 |
US6476677(B1) |
申请公布日期 |
2002.11.05 |
申请号 |
US20000651801 |
申请日期 |
2000.08.30 |
申请人 |
SKYWORKS SOLUTIONS, INC. |
发明人 |
KOMAILI JALEH;CLARK RICKE W. |
分类号 |
H03F1/32;H03F1/34;(IPC1-7):H03G3/30 |
主分类号 |
H03F1/32 |
代理机构 |
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代理人 |
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主权项 |
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