2.7 A hybrid supply modulator with 10dB ET operation dynamic range achieving a PAE of 42.6% at 27.0dBm PA output power

Author

Seung-Chul Lee ; Ji-Seon Paek ; Jun-Hee Jung ; Yong-Sik Youn ; Sung-Jun Lee ; Min-Soo Cho ; Jae-Jol Han ; Jung-Hyun Choi ; Yong-Whan Joo ; Nomiyama, Takahiro ; Su-Ho Lee ; Il-Young Sohn ; Cho, Thomas Byunghak ; Byeong-Ha Park ; Inyup Kang

Author_Institution

Samsung Electron., Hwaseong, South Korea

fYear

2015

fDate

22-26 Feb. 2015

Firstpage

1

Lastpage

3

Abstract

Envelope tracking (ET) prolongs the battery life by modulating the supply of a power amplifier (PA) according to the signal envelope. With this emerging technology, the PA efficiency is greatly improved, whereas the supply modulator (SM) itself needs to provide efficient and accurate envelope tracking for the overall performance of the SM-PA combined system (PA module). The ET technique, meanwhile, has seen limited use in high-power transmission due to the reduced SM efficiency for low output power originating from the linear stage in hybrid structures [1].

Keywords

modulators; power amplifiers; ET technique; PAE; SM-PA; envelope tracking; hybrid supply modulator; power amplifier; Batteries; Modulation; Noise; Power amplifiers; Power generation; Resonant frequency; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid- State Circuits Conference - (ISSCC), 2015 IEEE International

Conference_Location

San Francisco, CA

Print_ISBN

978-1-4799-6223-5

Type

conf

DOI

10.1109/ISSCC.2015.7062916

Filename

7062916