High Efficiency RF Power Amplifier Using Band Limited Dynamic Supply Control Method

被引：0
|
作者：
Lai, Chang-Ming [1 ]
Jau, Je-Kuan [1 ]
Li, Jian-Yu [1 ]
机构：
[1] Ind Technol Res Inst, Informat & Commun Res Labs, Hsinchu, Taiwan
来源：
2009 EUROPEAN MICROWAVE CONFERENCE, VOLS 1-3 | 2009年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This work describes a dynamic power supply method for improving power amplifier efficiency. The proposed band limited dynamic supply control (BLDSC) processes the envelope of transmitting signal into a bandwidth limited supply control signal. With the aid of a switching mode DC-DC convertor, the processed control signal can be reconstructed to the supply terminal of power amplifier (PA) for reducing supply voltage at low output level. The proposed configuration is hardware efficient and improves the efficiency of PA without sacrificing the input signal bandwidth. A power amplifier module is realized and tested using the 10MHz WiMAX standard. Experimental results show a maximum 50% DC power consumption reduction under 10MHz signal bandwidth.
引用
收藏
页码：350 / 353
页数：4
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