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1.发明授权Circuits and methods for providing a control voltage and improving switch performance in radio frequency (RF) modules 有权提供射频（RF）模块的控制电压和提高开关性能的电路和方法公开(公告)号：US09344129B2
公开(公告)日：2016-05-17
申请号：US13444390
申请日：2012-04-11
CPC分类号： H04B1/1615 , H04B1/1607 , H04B2001/0416 , H04L27/04
摘要： An apparatus comprises at least one transmit amplifier and rectification circuitry located in the at least one transmit amplifier, which is configured to receive a RF signal and provide a rectified voltage, which is selectably added to a voltage supplied by a battery to generate a DC voltage supply signal that is a function of RF power level. A controller is configured to select between providing the VBAT or the VSupply signal to a transmit switch depending on one or more of a logic state and a mode of operation. An alternate apparatus comprises a charge pump circuit configured to quickly raise a voltage supplied to it and store the output voltage on a capacitor and then either shift a first frequency provided by a charge pump oscillator to a lower second frequency or turn off a charge pump clock to maintain a voltage on the capacitor during a transmit mode.
摘要翻译： 一种装置包括位于至少一个发射放大器中的至少一个发射放大器和整流电路，该发射放大器和整流电路被配置为接收RF信号并提供整流电压，该电压被可选择地加到电池提供的电压上以产生直流电压 供电信号是RF功率电平的函数。 控制器被配置为根据逻辑状态和操作模式中的一个或多个来向发送开关提供VBAT或VSupply信号之间进行选择。 备选装置包括电荷泵电路，其被配置为快速升高提供给它的电压并将输出电压存储在电容器上，然后将由电荷泵振荡器提供的第一频率移动到较低的第二频率或者关闭电荷泵时钟 以在发送模式期间保持电容器上的电压。
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