公开(公告)号：US20150155907A1

公开(公告)日：2015-06-04

申请号：US14581516

申请日：2014-12-23

Applicant: Aviat U.S., Inc.

Inventor： Ying Shen ,  James Laudolff ,  Travis Mashburn ,  Todd Nichols ,  David C. Schafer ,  Thanh H. Nguyen

IPC: H04B1/62

CPC classification number: H04B1/62 ,  H04B1/0475 ,  H04B2001/0425

Abstract: A radio frequency transmitter comprising a modem which receives one or more input data signals and an adaptive predistortion signal and provides a baseband in-phase signal and a baseband quadrature signal. The transmitter may comprise a power amplifier module which receives the in-phase and quadrature phase signals and provides a radio frequency output signal. A predistortion module receives the radio frequency signal, downconverts the radio frequency signal to an intermediate frequency signal, and downconverts the intermediate frequency signal to a baseband feedback signal. The transmitter samples the feedback signal and provides an adaptive predistortion signal to the modem.

Abstract translation: 一种射频发射机，包括接收一个或多个输入数据信号的调制解调器和自适应预失真信号，并提供基带同相信号和基带正交信号。 发射机可以包括功率放大器模块，其接收同相和正交相位信号并提供射频输出信号。 预失真模块接收射频信号，将射频信号下变频为中频信号，并将中频信号下变频为基带反馈信号。 发射机对反馈信号进行采样，并向调制解调器提供自适应预失真信号。