公开(公告)号：US10560060B2

公开(公告)日：2020-02-11

申请号：US15578058

申请日：2016-04-28

Applicant: Qorvo US, Inc.

Inventor： Stephen James Franck ,  Xin Wang ,  Alireza Oskoui

IPC: H03F3/04 ,  H03F1/32 ,  H03F1/22 ,  H03F1/56 ,  H03F1/02 ,  H03F3/193 ,  H03F3/21

Abstract: The present disclosure relates to a power amplifier (PA) system provided in a semiconductor device and having feed forward gain control. The PA system comprises a transmit path and control circuitry. The transmit path is configured to amplify an input radio frequency (RF) signal and comprises a first tank circuit and a PA stage. The control circuitry is configured to detect a power level associated with the input RF signal and control a first bias signal provided to the PA stage based on a first function of the power level and control a quality factor (Q) of the first tank circuit based on a second function of the power level.

公开(公告)号：US20180159484A1

公开(公告)日：2018-06-07

申请号：US15578058

申请日：2016-04-28

Applicant: Qorvo US, Inc.

Inventor： Stephen James Franck ,  Xin Wang ,  Alireza Oskoui

IPC: H03F1/32 ,  H03F1/56 ,  H03F1/02 ,  H03F1/22 ,  H03F3/21 ,  H03F3/193

CPC classification number: H03F1/3258 ,  H03F1/0205 ,  H03F1/0266 ,  H03F1/223 ,  H03F1/3205 ,  H03F1/3223 ,  H03F1/56 ,  H03F3/193 ,  H03F3/195 ,  H03F3/21 ,  H03F3/245 ,  H03F2200/108 ,  H03F2200/18 ,  H03F2200/211 ,  H03F2200/222 ,  H03F2200/228 ,  H03F2200/234 ,  H03F2200/246 ,  H03F2200/301 ,  H03F2200/318 ,  H03F2200/321 ,  H03F2200/408 ,  H03F2200/42 ,  H03F2200/435 ,  H03F2200/451 ,  H03F2200/465 ,  H03F2200/61 ,  H03F2200/75 ,  H03F2200/99 ,  H03F2201/3212 ,  H03F2201/3218 ,  H03G3/3042 ,  H03G2201/106 ,  H03G2201/40

Abstract: The present disclosure relates to a power amplifier (PA) system provided in a semiconductor device and having feed forward gain control. The PA system comprises a transmit path and control circuitry. The transmit path is configured to amplify an input radio frequency (RF) signal and comprises a first tank circuit and a PA stage. The control circuitry is configured to detect a power level associated with the input RF signal and control a first bias signal provided to the PA stage based on a first function of the power level and control a quality factor (Q) of the first tank circuit based on a second function of the power level.