公开(公告)号：US09853608B2

公开(公告)日：2017-12-26

申请号：US15079204

申请日：2016-03-24

Applicant: RF Micro Devices, Inc.

Inventor： James M. Retz ,  Jeff Kaminski

IPC: H04B1/04 ,  H03F1/30 ,  H03F3/19 ,  H03F3/21 ,  H03G3/30 ,  H03F1/02 ,  H03F3/24

CPC classification number: H03F1/30 ,  H03F1/0227 ,  H03F1/0233 ,  H03F1/3241 ,  H03F3/19 ,  H03F3/21 ,  H03F3/245 ,  H03F2200/105 ,  H03F2200/336 ,  H03F2200/447 ,  H03F2200/451 ,  H03G3/3042 ,  H04B1/0475 ,  H04B2001/0416 ,  H04B2001/0425

Abstract: Disclosed is an envelope tracking (ET) system having a transmit (TX) section, a power amplifier (PA), a fast switched-mode power supply (Fast SMPS), and control circuitry. The TX section receives an input signal and provides a modulated signal to the PA. The TX section also generates an ET signal based on a modulation envelope of the modulated signal. The TX section provides an envelope control (EC) signal based on the ET signal to modulate a supply signal provided to the PA by the Fast SMPS. The control circuitry provides a transmit TX gain signal and an ET gain signal to the TX section based on a PA temperature signal, a TX temperature signal, a target power signal, a measured power signal. The control circuitry is configured to maintain the efficiency and linearity of the PA over a wide operating temperature range.

公开(公告)号：US20160373071A1

公开(公告)日：2016-12-22

申请号：US15079204

申请日：2016-03-24

Applicant: RF Micro Devices, Inc.

Inventor： James M. Retz ,  Jeff Kaminski

IPC: H03F1/30 ,  H04B1/04 ,  H03G3/30 ,  H03F3/19 ,  H03F3/21

CPC classification number: H03F1/30 ,  H03F1/0227 ,  H03F1/0233 ,  H03F1/3241 ,  H03F3/19 ,  H03F3/21 ,  H03F3/245 ,  H03F2200/105 ,  H03F2200/336 ,  H03F2200/447 ,  H03F2200/451 ,  H03G3/3042 ,  H04B1/0475 ,  H04B2001/0416 ,  H04B2001/0425

Abstract: Disclosed is an envelope tracking (ET) system having a transmit (TX) section, a power amplifier (PA), a fast switched-mode power supply (Fast SMPS), and control circuitry. The TX section receives an input signal and provides a modulated signal to the PA. The TX section also generates an ET signal based on a modulation envelope of the modulated signal. The TX section provides an envelope control (EC) signal based on the ET signal to modulate a supply signal provided to the PA by the Fast SMPS. The control circuitry provides a transmit TX gain signal and an ET gain signal to the TX section based on a PA temperature signal, a TX temperature signal, a target power signal, a measured power signal. The control circuitry is configured to maintain the efficiency and linearity of the PA over a wide operating temperature range.

Abstract translation: 公开了具有发射（TX）部分，功率放大器（PA），快速开关模式电源（Fast SMPS）和控制电路的信封跟踪（ET）系统。 TX部分接收输入信号并向PA提供调制信号。 TX部分还基于调制信号的调制包络生成ET信号。 TX部分提供基于ET信号的信封控制（EC）信号，以调制由快速SMPS提供给PA的电源信号。 控制电路基于PA温度信号，TX温度信号，目标功率信号，测量的功率信号，向TX部分提供发射TX增益信号和ET增益信号。 控制电路被配置为在宽的工作温度范围内保持PA的效率和线性。