公开(公告)号：WO2012106437A1

公开(公告)日：2012-08-09

申请号：PCT/US2012/023495

申请日：2012-02-01

Applicant: RF MICRO DEVICES, INC.

Inventor： CHIRON, Jean-frederic

IPC: H03F1/32 ,  H03F1/02 ,  H03F3/24 ,  H04B17/00 ,  H03G3/00 ,  H03G3/30

CPC classification number: H03F1/025 ,  H03F1/0222 ,  H03F1/3294 ,  H03F3/189 ,  H03F3/195 ,  H03F3/24 ,  H03F2200/102 ,  H03F2200/105 ,  H03F2200/15 ,  H03F2200/336 ,  H03F2200/504 ,  H03F2200/99 ,  H03F2201/3233 ,  H03G3/004 ,  H03G3/3042 ,  H04B17/0085 ,  H04B17/13

Abstract: Disclosed is a transceiver for an envelope following system that includes a power amplifier (PA) having a signal input, a signal output, and a power input that receives power from a power management system that modulates a supply voltage provided to the PA in response to an envelope signal. The transceiver includes a calibration subsystem that is adapted to provide a first test signal to the signal input of the PA and to provide a second test signal to the power management system in place of the envelope signal. The calibration subsystem is programmed with calibration methods that sweep the first test signal through a first range and to sweep the second test signal through a second range in order to derive values that make up a pseudo-envelope look-up table (LUT) that is usable by the transceiver.

Abstract translation: 公开了一种用于包络跟踪系统的收发器，其包括具有信号输入的功率放大器（PA），信号输出和电力输入，所述功率放大器（PA）从功率管理系统接收功率，该功率管理系统响应于 包络信号。 收发器包括校准子系统，其适于向PA的信号输入提供第一测试信号，并且向电力管理系统提供替代包络信号的第二测试信号。 校准子系统用校准方法进行编程，该校准方法通过第一范围扫描第一测试信号，并扫描第二测试信号通过第二范围，以得到构成伪包络查找表（LUT）的值 由收发器使用。