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1. 发明申请

US20050030094A1 Low power consumption adaptive power amplifier 有权
标题翻译：低功耗自适应功率放大器
公开(公告)号：US20050030094A1
公开(公告)日：2005-02-10
申请号：US10634610
申请日：2003-08-05
申请人： Clark Conrad , Armin Klomsdorf , Ernest Schirmann
发明人： Clark Conrad , Armin Klomsdorf , Ernest Schirmann
IPC分类号： H03F1/02 , H03F1/56 , H03F3/21 , H03F3/72 , H03G3/20
CPC分类号： H03F3/211 , H03F1/02 , H03F1/0211 , H03F1/0261 , H03F1/0277 , H03F1/56 , H03F3/72 , H03F2200/303 , H03F2200/391 , H03F2200/417 , H03F2203/7227
摘要： A power amplification circuit (10) includes a scalable power amplifier (20) to produce an RF output signal (50) at an output of the power amplification circuit (10), and a variable impedance circuit (30) coupled to the output of the power amplification circuit (10). The scalable power amplifier (20) includes a plurality of selectively activated amplifier elements (22), (24), (26) to produce the RF output signal (50) in accordance with a desired RF output signal power level. The power amplification circuit (10) selectively activates individual amplifier elements by, for example reducing power or increasing power to at least one amplifier element. The variable impedance circuit (30) varies an impedance of the variable impedance circuit (30) to dynamically load the output of the scalable power amplifier(20).
摘要翻译：功率放大电路（10）包括可扩展功率放大器（20），以在功率放大电路（10）的输出处产生RF输出信号（50），以及可变阻抗电路（30），耦合到所述功率放大电路功率放大电路（10）。可扩展功率放大器（20）包括多个选择性激活的放大器元件（22），（24），（26），以根据期望的RF输出信号功率电平产生RF输出信号（50）。功率放大电路（10）通过例如降低功率或增加至少一个放大器元件的功率来选择性地激活各个放大器元件。可变阻抗电路（30）改变可变阻抗电路（30）的阻抗，以动态地加载可伸缩功率放大器（20）的输出。

2. 发明授权

US07170341B2 Low power consumption adaptive power amplifier 有权
标题翻译：低功耗自适应功率放大器
公开(公告)号：US07170341B2
公开(公告)日：2007-01-30
申请号：US10634610
申请日：2003-08-05
申请人： Clark Conrad , Armin Klomsdorf , Ernest Schirmann
发明人： Clark Conrad , Armin Klomsdorf , Ernest Schirmann
IPC分类号： H03F1/14
CPC分类号： H03F3/211 , H03F1/02 , H03F1/0211 , H03F1/0261 , H03F1/0277 , H03F1/56 , H03F3/72 , H03F2200/303 , H03F2200/391 , H03F2200/417 , H03F2203/7227
摘要： A power amplification circuit (10) includes a scalable power amplifier (20) to produce an RF output signal (50) at an output of the power amplification circuit (10), and a variable impedance circuit (30) coupled to the output of the power amplification circuit (10). The scalable power amplifier (20) includes a plurality of selectively activated amplifier elements (22), (24), (26) to produce the RF output signal (50) in accordance with a desired RF output signal power level. The power amplification circuit (10) selectively activates individual amplifier elements by, for example reducing power or increasing power to at least one amplifier element. The variable impedance circuit (30) varies an impedance of the variable impedance circuit (30) to dynamically load the output of the scalable power amplifier (20).
摘要翻译：功率放大电路（10）包括可扩展功率放大器（20），以在功率放大电路（10）的输出处产生RF输出信号（50），以及可变阻抗电路（30），耦合到所述功率放大电路功率放大电路（10）。可扩展功率放大器（20）包括多个选择性激活的放大器元件（22），（24），（26），以根据期望的RF输出信号功率电平产生RF输出信号（50）。功率放大电路（10）通过例如降低功率或增加至少一个放大器元件的功率来选择性地激活各个放大器元件。可变阻抗电路（30）改变可变阻抗电路（30）的阻抗，以动态地加载可伸缩功率放大器（20）的输出。

3. 发明授权

US06794935B2 Power amplification circuit and method for supplying power at a plurality of desired power output levels 有权
公开(公告)号：US06794935B2
公开(公告)日：2004-09-21
申请号：US10272964
申请日：2002-10-17
申请人： Armin Klomsdorf , Clark Conrad , Matthew Greene
发明人： Armin Klomsdorf , Clark Conrad , Matthew Greene
IPC分类号： H03G320
CPC分类号： H03G3/3042 , H03F1/0261 , H03F1/0266 , H03F1/56 , H03F2200/321 , H03F2200/387 , H03F2200/405
摘要： The present invention provides a method and apparatus for supplying power to a load at a plurality of different power levels. The method includes changing between high and low power outputs of the power amplifier when amplifying a signal having a common modulation format. A different bias is applied to the power amplifier at the low power output than the bias applied to the power amplifier at the high power output. The output of the power amplifier is loaded with a different impedance at the low power output than the impedance loaded at the output of the power amplifier output at the high power output. In at least one embodiment, the power amplifier changes between high and low power outputs at a different threshold level dependant upon whether the power amplifier is transitioning from the high power output to the low power output, or whether the power amplifier is transitioning from the low power output to the high power output.

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