A multi-mode multi-band power amplifier for quad-band GSM, dual-band TD-SCDMA, and TDD LTE band 39 cellular applications

Author

Junming Lin;Yaohua Zheng;Zhihao Zhang;Gary Zhang

Author_Institution

Information and Communication Engineering, School of Information engineering, Guangdong University of Technology, Guangzhou, 510006, China

Volume

1

fYear

2015

Firstpage

1

Lastpage

3

Abstract

A novel multi-band multi-mode (MMMB) power amplifier (PA) structure for GSM/TD-SCDMA/LTE cellular applications, is presented. For good harmonic suppression and high integration density performance, a Class-E PA and linear PA cores are employed with only two output paths for low band (LB) and high band (HB), respectively. The selections of modes (2G/2.5G/3G/4G) and working condition of each PA core are controlled by a commercial CMOS controller. The selection of output paths are controlled by a low-loss radio frequency switch (RFSW) within a directional coupler for good linearity and efficiency. To demonstrate the feasibility of the concept, the PA was tested under a series of discrete frequency points and generated an output power of 33.5 dBm with a PAE of better than 35% and 33.1 dBm with a PAE of better than 31% for low band and high band, respectively. When applied GMSK/EDGE, QPSK TD-SCDMA and 10MHz QPSK TD-LTE input signals, good ACPR performance are obtained with output power of 27.2, 26.5 and 25 dBm respectively.

Keywords

"Power amplifiers","Power generation","Control systems","Time division synchronous code division multiple access","Radio frequency","Switching circuits","Harmonic analysis"

Publisher

ieee

Conference_Titel

Microwave Conference (APMC), 2015 Asia-Pacific

Print_ISBN

978-1-4799-8765-8

Type

conf

DOI

10.1109/APMC.2015.7411817

Filename

7411817