1.7/2.6 GHz high-efficiency concurrent dual-band power amplifier with dual-band harmonic wave controlled transformer

被引：24
|
作者：
Chen, Peng [1 ]
He, Songbai [1 ]
Wang, Xianfei [1 ]
Dai, Zhijiang [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Elect Engn, Chengdu 611731, Peoples R China
来源：
ELECTRONICS LETTERS | 2014年 / 50卷 / 03期
基金：
中国国家自然科学基金;
关键词：
channel coding; channel estimation; iterative decoding; matrix algebra; OFDM modulation; precoding; vectors; symbol detection; OFDM system; data-nulling superimposed pilot scheme; input data vector; precoding matrix; training pilot insertion; frequency-division multiplexed pilot; FDM pilot; input data distortion mitigation; simple iterative reconstruction scheme; CHANNEL ESTIMATION;
D O I：
10.1049/el.2013.3781
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：
A 1.7/2.6 GHz high-efficiency concurrent dual-band power amplifier (DBPA) with a dual-band harmonic wave controlled transformer is demonstrated. The proposed dual-band transformer, which transfers the fundamental and the second harmonic impedances of each frequency, is directly transmission line implemented with the help of an optimisation algorithm. The measurement results show that the proposed DBPA has performances of 70 and 64% power added efficiency with an 11 dB gain and a 41 dBm output power at 1.7 and 2.6 GHz, respectively. Its average drain efficiency is more than 42% and the adjacent channel leakage ratios are lower than -46 dBc at both frequencies with the digital predistortion adjustment for a 5 MHz WCDMA signal input.
引用
收藏
页码：184 / 185
页数：2
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