公开(公告)号：US10305429B2

公开(公告)日：2019-05-28

申请号：US15690467

申请日：2017-08-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Young-hwan Choo ,  Ji-seon Paek ,  Dong-su Kim

IPC: H03G3/20 ,  H03F1/02 ,  H03F3/19 ,  H03F3/21 ,  H04B1/16 ,  H03F3/24 ,  H03F3/68 ,  H04B1/04

Abstract: A supply modulator for providing a first power supply voltage and a second power supply voltage to a first power amplifier and a second power amplifier, respectively, includes a first modulation circuit including a linear regulator and a switching regulator, the first modulation circuit being configured to generate a first modulation voltage in accordance with envelope tracking, and provide the first modulation voltage to the first power amplifier as the first power supply voltage; and a single inductor multiple output converter configured to generate a first output voltage and a second output voltage based on an input voltage having a fixed level, provide the first output voltage to the linear regulator of the first modulation circuit as a power supply voltage, and provide the second output voltage to the second power amplifier as the second power supply voltage.

公开(公告)号：US20180152144A1

公开(公告)日：2018-05-31

申请号：US15690467

申请日：2017-08-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Young-hwan Choo ,  Ji-seon Paek ,  Dong-su KIM

IPC: H03F1/02 ,  H03F3/21 ,  H03F3/19

CPC classification number: H03F1/0216 ,  H03F1/0227 ,  H03F3/19 ,  H03F3/211 ,  H03F3/245 ,  H03F3/68 ,  H03F2200/102 ,  H03F2200/105 ,  H03F2200/451 ,  H04B1/04 ,  H04B1/0483 ,  H04B1/1607

Abstract: A supply modulator for providing a first power supply voltage and a second power supply voltage to a first power amplifier and a second power amplifier, respectively, includes a first modulation circuit including a linear regulator and a switching regulator, the first modulation circuit being configured to generate a first modulation voltage in accordance with envelope tracking, and provide the first modulation voltage to the first power amplifier as the first power supply voltage; and a single inductor multiple output converter configured to generate a first output voltage and a second output voltage based on an input voltage having a fixed level, provide the first output voltage to the linear regulator of the first modulation circuit as a power supply voltage, and provide the second output voltage to the second power amplifier as the second power supply voltage.