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61. 发明授权

US07109897B1 Power amplifier control reducing output power variation 有权
标题翻译：功率放大器控制降低输出功率变化
公开(公告)号：US07109897B1
公开(公告)日：2006-09-19
申请号：US11245851
申请日：2005-10-07
申请人： Chris Levesque
发明人： Chris Levesque
IPC分类号： H03M7/40 , H03G3/10 , H04B1/04
CPC分类号： H03F1/0216 , H03F1/0205 , H03F3/24 , H03F2200/372 , H03F2200/481 , H03F2200/504 , H03F2200/78 , H04B2001/0416
摘要： Power control circuitry for providing a variable supply voltage to power amplifier circuitry in such a manner as to reduce or essentially eliminate variations in output power due to variations in load impedance is provided. The power control circuitry includes a voltage regulator for providing the variable supply voltage to the power amplifier circuitry, current detection circuitry, correction circuitry, and combiner circuitry. In operation, the current detection circuitry provides a signal indicative of an actual current provided to the power amplifier circuitry from the voltage regulator. The correction circuitry provides a correction signal based on a comparison of the signal indicative of the actual current and a signal indicative of a reference current. The combiner circuitry operates to combine the correction signal and the adjustable power control signal to provide the corrected adjustable power control signal to the voltage regulator.
摘要翻译：提供了用于以减少或基本上消除由于负载阻抗的变化引起的输出功率变化的方式向功率放大器电路提供可变电源电压的功率控制电路。功率控制电路包括用于向功率放大器电路，电流检测电路，校正电路和组合器电路提供可变电源电压的电压调节器。在操作中，电流检测电路提供指示从电压调节器提供给功率放大器电路的实际电流的信号。校正电路基于指示实际电流的信号和表示参考电流的信号的比较来提供校正信号。组合器电路操作以组合校正信号和可调功率控制信号，以向校正器提供校正的可调节功率控制信号。

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