>41% Efficient 10W Envelope Modulated LTE Downlink Power Amplifier

被引：0
|
作者：
Watkins, Gavin [1 ]
Zhou, Jiafeng [2 ]
Morris, Kevin [2 ]
机构：
[1] Toshiba Res Europe Ltd, 32 Queen Sq, Bristol BS1 4ND, Avon, England
[2] Univ Bristol, Dept Elect & Elect Engn, Bristol BS8 1UB, Avon, England
来源：
2011 6TH EUROPEAN MICROWAVE INTEGRATED CIRCUIT CONFERENCE | 2011年
关键词：
Class E; Class G; Switched Mode Power Supply (SMPS); Envelope Elimination and Restoration (EER); Envelope Tracking (ET); Peak-to-Average Power Ratio (PAPR); Power Amplifier (PA);
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：
In this paper envelope Modulation is applied to a class E RF power amplifier (PA). The class E PA is based around a GaN transistor and operates at 2GHz to achieve an efficiency of 74.4% at 11.5W output power (POUT) under continuous wave excitation. The envelope modulator consists of a Switched Mode Power Supply (SMPS) and a class G amplifier, resulting in a combined efficiency of 71.5%. In full Envelope Tracking (ET) mode a total system efficiency of 41.9% is achieve at 10.4W P-OUT when amplifying a 3MHz bandwidth 3GPP Long Term Evolution (LTE) signal. In Envelope Elimination and Restoration (EER) mode under these conditions the efficiency increases to 44.2% at 10.6W P-OUT.
引用
收藏
页码：260 / 263
页数：4
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