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公开(公告)号:US20060145764A1
公开(公告)日:2006-07-06
申请号:US11026213
申请日:2004-12-30
IPC分类号: H03G3/10
CPC分类号: H03G3/3047
摘要: A method (400) for controlling power and an amplifier and associated power control circuit (100) with a power amplifier (110) coupled through a current sensing resistor (Rsen) to a supply voltage line (vcc). There is also a current to voltage converter (120) having a converter output (135) and at least one converter input, the converter input being coupled to the supply voltage line (Vcc) of the power amplifier (110). A voltage reference providing circuitry (140) is coupled to a second input (152) of an integrator (150) that also has an integrator output (153) and a first input (151) coupled to the converter output (135) and a direct current biasing circuit (195) couples the integrator output ((153) to an amplifier input (111) of amplifier (110). The method (400) and circuit (100) use a time dependent pre-defined voltage characteristic supplied to the integrator (150).
摘要翻译: 一种用于通过电流感测电阻器(Rsen)耦合到电源电压线(vcc)的功率放大器(110)来控制功率的方法(400)和放大器以及相关联的功率控制电路(100)。 还存在具有转换器输出(135)和至少一个转换器输入的电流 - 电压转换器(120),该转换器输入耦合到功率放大器(110)的电源电压线(Vcc)。 电压参考提供电路(140)耦合到积分器(150)的第二输入端(152),积分器(150)还具有耦合到转换器输出端(135)的积分器输出(153)和第一输入(151) 电流偏置电路(195)将积分器输出((153))耦合到放大器(110)的放大器输入(111),方法(400)和电路(100)使用提供给积分器的时间相关的预定电压特性 (150)。