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1. 发明申请

WO2014028667A1 SYSTEMS, CIRCUITS AND METHODS RELATED TO CONTROLLERS FOR RADIO-FREQUENCY POWER AMPLIFIERS 审中-公开
标题翻译：无线电频率放大器控制器的系统，电路和方法
公开(公告)号：WO2014028667A1
公开(公告)日：2014-02-20
申请号：PCT/US2013/055014
申请日：2013-08-14
申请人： SKYWORKS SOLUTIONS, INC.
发明人： GEBEYEHU, Netsanet , SHI, Ying , KASNAVI, Reza , OZ, Onder , FENG, Jinghang
IPC分类号： H03F1/30
CPC分类号： H03F1/0233 , H03F3/195 , H03F3/213 , H03F2200/423 , H03F2200/451 , H03F2200/462 , H03F2200/528 , H03G3/30 , H03G3/3042
摘要： Disclosed are systems, circuits and methods related to controlling of a radio-frequency (RF) power amplifier (PA). In some embodiments, a PA control circuit can include a first circuit configured to generate a replica base current from a base current provided to the PA, with the replica base current being representative of a collector current of the PA scaled by a beta parameter. The PA control circuit can further include a second circuit configured to generate a beta-tracking reference current from a temperature-compensated voltage and a base resistance associated with the PA. The PA control circuit can further include a current steering circuit configured to receive the replica base current and the beta-tracking reference current and generate a proportional current to a clamping node of a base driver. In some embodiments, the replica base current can be obtained by a current-mode comparison of a finger-sensed current with a ramp current.
摘要翻译：公开了与控制射频（RF）功率放大器（PA）相关的系统，电路和方法。在一些实施例中，PA控制电路可以包括被配置为从提供给PA的基极电流产生复制基极电流的第一电路，其中复制基极电流代表由β参数缩放的PA的集电极电流。 PA控制电路还可以包括被配置为从温度补偿电压和与PA相关联的基极电阻产生β跟踪参考电流的第二电路。 PA控制电路还可以包括配置成接收复制基极电流和β跟踪参考电流的电流转向电路，并且产生一个比例电流到基本驱动器的钳位节点。在一些实施例中，可以通过手指感测电流与斜坡电流的电流模式比较来获得复制基极电流。

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