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1. 发明授权

US06380802B1 Transmitter using input modulation for envelope restoration scheme for linear high-efficiency power amplification 失效
标题翻译：发射机使用输入调制进行线性高效功率放大的包络恢复方案
公开(公告)号：US06380802B1
公开(公告)日：2002-04-30
申请号：US09752417
申请日：2000-12-29
申请人： David R. Pehike , William O. Camp, Jr. , Antonio J. Montalvo
发明人： David R. Pehike , William O. Camp, Jr. , Antonio J. Montalvo
IPC分类号： H03F338
CPC分类号： H03F1/3247 , H03C5/00 , H03F1/02 , H03F3/2176 , H03F3/24 , H03F3/393 , H04B2001/0408 , H04B2001/045
摘要： An apparatus and method for creating an amplifier input waveform based on received phase and amplitude information from an input signal. The apparatus includes a first switch receiving phase information from a primary waveform and a second switch in communication with the first switch and the input. The second switch receives amplitude information from the primary waveform and receives the phase information from the first switch and uses the amplitude information to modulate the phase information. A secondary waveform is thus created for input to the amplifier load matching network. In this way, an amplitude modulated waveform is amplified at high efficiency, enabling application of either all or part of the phase and/or amplitude modulation at the input of the amplifier.
摘要翻译：一种用于基于从输入信号接收的相位和幅度信息产生放大器输入波形的装置和方法。该装置包括：第一开关，接收来自初级波形的相位信息;以及第二开关，与第一开关和输入端通信。第二开关从主波形接收振幅信息，并从第一开关接收相位信息，并使用振幅信息来调制相位信息。因此，创建用于输入到放大器负载匹配网络的次级波形。以这种方式，幅度调制波形以高效率被放大，使得能够在放大器的输入处施加全部或部分相位和/或幅度调制。

2. 发明授权

US06765443B2 Dynamic bias controller for power amplifier circuits 有权
标题翻译：功率放大器电路的动态偏置控制器
公开(公告)号：US06765443B2
公开(公告)日：2004-07-20
申请号：US10426710
申请日：2003-04-30
申请人： David R. Pehike
发明人： David R. Pehike
IPC分类号： H03F304
CPC分类号： H03F1/0272 , H03F1/025 , H03F1/301 , H03F2200/108 , H03F2200/195 , H03F2200/451 , H03F2200/462 , H03F2200/481 , H03F2200/483 , H03F2200/504
摘要： A bias controller sets the quiescent current of a power amplifier to a desired value by dynamically adjusting the power amplifier bias voltage. Using closed-loop control, the bias controller sets the bias voltage to whatever value is needed despite circuit component variations and temperature effects. Operation of the bias controller complements dynamic bias voltage adjustment in advance of transmit operations, such as in advance of a transmit burst. In a first state, where the power amplifier is in a quiescent condition, the bias controller adjusts bias voltage to set the desired quiescent current by detecting the supply current into the power amplifier. The bias controller then transitions to a second state, where it maintains the adjusted bias voltage irrespective of amplifier supply current. Despite its ability to sense supply current into the power amplifier, the bias controller's configurations avoid dissipative current sensing during normal operation of the power amplifier.
摘要翻译：偏置控制器通过动态调整功率放大器偏置电压将功率放大器的静态电流设置为所需的值。使用闭环控制，偏置控制器将偏置电压设置为尽管电路元件变化和温度影响所需的任何值。偏置控制器的操作在发送操作之前补充动态偏置电压调整，例如在发送突发之前。在功率放大器处于静态状态的第一状态中，偏置控制器通过检测进入功率放大器的供电电流来调节偏置电压以设置所需的静态电流。然后，偏置控制器转变到第二状态，其中它保持调节的偏置电压，而与放大器电源电流无关。尽管它能够感测到功率放大器的电源电流，但是偏置控制器的配置避免了功率放大器正常工作期间的耗散电流检测。

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