Concurrent Dual-Band Envelope Tracking Power Amplifier for Carrier Aggregated Systems

被引：0
|
作者：
Sarbishaei, Hassan [1 ]
Hu, Yushi [1 ]
Fehri, Bilel [1 ]
Boumaiza, Slim [1 ]
机构：
[1] Univ Waterloo, Waterloo, ON N2L 3G1, Canada
来源：
2014 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS) | 2014年
关键词：
Concurrent dual-band transmission; envelope tracking; GaN; RF Power amplifiers;
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 paper presents a dual-band envelope tracking power amplifier (ET PA) capable of amplifying concurrent dual-band modulated signals using a typical single-band envelope amplifier. The dual-band ET PA succeeded to concurrently amplify widely spaced dual-band modulated signals with balanced and imbalanced output powers in each band. The dual-band ET PA was linearized using dual-band Volterra based digital pre-distortion that accounted for the drain supply modulation. When driven with a dual-band signal formed of WCDMA and 5 MHz LTE signals at 780 MHz and 880 MHz respectively, the ET PA achieved an average output power and drain efficiency of better than 39 dBm and 45% with an adjacent channel power ratio of better than -47 dBc for both bands.
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页数：4
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