公开(公告)号：WO2014116933A2

公开(公告)日：2014-07-31

申请号：PCT/US2014/012927

申请日：2014-01-24

Applicant: RF MICRO DEVICES, INC

Inventor： KHLAT, Nadim ,  KAY, Michael R. ,  NAG, Manbir Singh

IPC: H03F3/189

CPC classification number: H03F1/0227 ,  H02M2001/0045 ,  H03F1/0266 ,  H03F3/195 ,  H03F3/24 ,  H03F2200/375 ,  H03F2200/432 ,  H03F2200/451 ,  H03F2200/471 ,  H03F2200/555

Abstract: A parallel amplifier and a parallel amplifier power supply are disclosed according to one embodiment of the present disclosure. The parallel amplifier power supply provides a parallel amplifier power supply signal, which is adjustable on a communications slot-to-communications slot basis. During envelope tracking, the parallel amplifier regulates an envelope power supply voltage based on the parallel amplifier power supply signal. The parallel amplifier and an offset capacitance voltage control loop are disclosed according to an alternate embodiment of the present disclosure. The parallel amplifier has a parallel amplifier output, which is coupled to an envelope tracking power supply output via an offset capacitive element. The offset capacitive element has an offset capacitive voltage. The offset capacitance voltage control loop regulates the offset capacitive voltage, which is adjustable on a communications slot-to-communications slot basis.

Abstract translation: 根据本公开的一个实施例公开了一种并行放大器和并联放大器电源。 并行放大器电源提供并行放大器电源信号，该信号可在通信时隙到通信时隙的基础上进行调整。 在包络跟踪期间，并行放大器基于并行放大器电源信号来调节包络电源电压。 根据本公开的替代实施例公开了并联放大器和偏移电容电压控制回路。 并联放大器有一个并联放大器输出，它通过偏置电容元件与包络跟踪电源输出相连。 偏移电容元件具有偏移电容电压。 偏移电容电压控制环路调节偏移电容电压，可在通信插槽对通信时隙的基础上进行调节。