Multiband and Multimode Concurrent PA With Novel Intermodulation Tuning Network for Linearity Improvement
Multiband and Multimode Concurrent PA With Novel Intermodulation Tuning Network for Linearity Improvement
复制标题
多频段和多模式并发 PA,具有新颖的互调调谐网络,可改善线性度
DOI:
10.1109/lmwc.2018.2794819
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发表时间:
2018-02
影响因子:
3
通讯作者:
Feng Zhenghe
中科院分区:
文献类型:
--
作者:
Li Jing;Chen Wenhua;Huang Fei;Feng Zhenghe
For multiband power amplifiers (PAs), high impedance at the second-order intermodulation frequencies at the drain can result in severe nonlinear distortion in concurrent mode. To solve this problem, a novel intermodulation tuning network (IMTN) is proposed in this letter. The IMTN is in parallel to the output matching network and has multiple impedance zeros at low frequencies. Therefore, the improvement in linearity is evident even if the frequency difference of two operating bands of PA is relatively large. Experimental measurement is carried out with three sets of dual-band 10-MHz LTE modulated signals, and the carrier frequencies are 1.8/2.1, 2.1/2.6, and 1.8/2.6 GHz, respectively. In mode 2 with 500-MHz frequency difference, the adjacent channel power ratio is improved by 6 dB compared with the conventional PA without IMTN, and in mode 3 with 800-MHz frequency difference, 3 dB is improved compared with low-pass IMTN. The measured average efficiencies of three modes are 40.3%, 36.4% and 37.6%, respectively, at 35-dBm total output power.
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影响因子:
3
作者:
R. Fagotti;A. Cidronali;G. Manes
通讯作者:
R. Fagotti;A. Cidronali;G. Manes
DOI:
10.1109/tmtt.2008.2004897
发表时间:
2008-11-01
影响因子:
4.3
作者:
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通讯作者:
Piazzon, Luca
影响因子:
3
作者:
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DOI:
10.1109/wamicon.2012.6208427
发表时间:
2012-04
期刊:
WAMICON 2012 IEEE Wireless & Microwave Technology Conference
影响因子:
--
作者:
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通讯作者:
P. Saad;P. Colantonio;J. Moon;L. Piazzon;F. Giannini;K. Andersson;B. Kim;C. Fager
DOI:
10.1109/tmtt.2013.2282283
发表时间:
2013-10
影响因子:
4.3
作者:
Wen Hua Chen;Fadhel Ghannouchi;Zhenghe Feng;Yuanan Liu
通讯作者:
Yuanan Liu