公开(公告)号：US20170085224A1

公开(公告)日：2017-03-23

申请号：US14954561

申请日：2015-11-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yong Sik YOUN ,  Seung Chul LEE ,  Ji Seon PAEK ,  Thomas Byunghak CHO

IPC: H03F1/02 ,  H03F3/21 ,  H03F3/193

CPC classification number: H03F1/0227 ,  H03F1/0211 ,  H03F3/19 ,  H03F3/193 ,  H03F3/195 ,  H03F3/21 ,  H03F3/213 ,  H03F2200/102 ,  H03F2200/105 ,  H03F2200/421 ,  H03F2200/432 ,  H03F2200/451

Abstract: An apparatus for and method of a supply modulator (SM) for a power amplifier (PA) is provided. The apparatus includes a buck-boost converter, including a supply input connected to a battery voltage (Vbat), and an output; a switch and capacitors module, including a first input connected to the output of the buck-boost converter, and a second input; a buck (dual) converter, including a supply input connected to Vbat, an input connected to the output of the buck-boost converter, and an output connected to the second input of the switch and capacitors module; a linear amplifier (LA), including a supply input connected to the output of the buck-boost converter, an input, and an output connected to the second input of the switch and capacitors module; and the PA, including a supply input connected to the output of the buck (dual converter, an input for receiving a radio frequency (RF) signal, and an output for outputting an RF signal.