DocumentCode
3581664
Title
Techniques of envelope tracking transmitter for base-station and mobile applications
Author
Son, Hyuk Su ; Kim, Joon Hyung ; Kim, Woo Young ; Jang, Joo Young ; Oh, Inn Yeal ; Park, Chul Soon
Author_Institution
Department of Electrical Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Korea
fYear
2014
Firstpage
1089
Lastpage
1091
Abstract
In this paper, we propose enhanced architectures of an envelope tracking (ET) transmitter. For base-station applications, high efficient ET transmitter architectures are implemented using optimized power amplifier (PA) with a 2-bit envelope amplifier (EA) and a multi-biased linear EA. In addition, fully integrated multi-band/multi-mode ET transmitter is implemented using a multi-band PA incorporating an integrated on-chip linearizer with a multi-mode dual-switching EA for mobile applications. ET transmitters that achieve an overall efficiency as high as 47.8% in 10MHz LTE base-station and 28% in 5MHz LTE mobile applications are presented.
Keywords
CMOS integrated circuits; Capacitance; Mobile communication; Power amplifiers; Regulators; Switches; Transmitters; Envelope amplifier (EA); envelope tracking (ET); linearizer; multi-band; power amplifier (PA);
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference (APMC), 2014 Asia-Pacific
Type
conf
Filename
7067673
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