A Multi-Mode Envelope Tracking Power Amplifier for Software Defined Radio Transmitters

被引：0
|
作者：
Kim, Bumman [1 ]
Choi, Jinsung [1 ]
Kang, Daehyun [1 ]
Kim, Dongsu [1 ]
机构：
[1] Pohang Univ Sci & Technol, Dept Elect Engn, Gyeongbuk, South Korea
来源：
2010 IEEE INTERNATIONAL MICROWAVE WORKSHOP SERIES ON RF FRONT-ENDS FOR SOFTWARE DEFINED AND COGNITIVE RADIO SOLUTIONS (IMWS 2010) | 2010年
关键词：
Polar transmitter; multi-mode; power amplifiers; envelope-tracking;
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
A multi-mode envelope tracking power amplifier is presented for software defined and cognitive radio solutions. A new 0.13um CMOS hysteretic-controlled hybrid switching supply modulator is developed for the mode dependent operation of the power supply modulator. Combined with 1.88GHz HBT class-AB/F PA operating with novel envelope shaping method, the proposed envelope tracking power amplifier shows high efficiency and linearity over broad output power range. It achieves the PAE of 45/46/34.3% at the average output power of 27.8/29/23.9dBm for EDGE/WCDMA/ Mobile-WiMax, respectively, while satisfying the linearity specification without any digital pre-distortion technique. There are about 7% and 3% improvements of the overall PAE for EDGE and WCDMA, respectively, through the adaptive multi-mode operation.
引用
收藏
页数：4
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