Enhanced Analysis and Design Method of Concurrent Dual-Band Power Amplifiers With Intermodulation Impedance Tuning
Enhanced Analysis and Design Method of Concurrent Dual-Band Power Amplifiers With Intermodulation Impedance Tuning
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互调阻抗调谐并行双频功率放大器的增强分析与设计方法
DOI：
10.1109/tmtt.2013.2282283
复制
发表时间：
2013-10
影响因子：
4.3
通讯作者：
Yuanan Liu
中科院分区：
文献类型：
--
作者：
Wen Hua Chen;Fadhel Ghannouchi;Zhenghe Feng;Yuanan Liu
本文对双频信号驱动下功率放大器的工作特性进行了理论分析。根据分析，互调（IM）频率处的阻抗匹配对于PA工作在并发模式是非常重要的。基于IM阻抗调谐的概念，可以引入一系列新的操作模式，包括并发A类、AB类、B类和C类。推导了这些模式的理论性能，并讨论了它们的干扰效应。提出了一种可能的结构来实现所提出的IM阻抗调谐，并演示了在1.9-2.6 GHz长期演进（LTE）频带下操作的并发AB类双频示例PA。实验结果表明，理论分析与实验结果吻合较好，在10 MHz和15 MHz LTE信号同时驱动的情况下，并行AB类功率放大器样机在并行模式下具有36.1%以上的功率附加效率。据我们所知，这是并发双频PA的最先进的效率性能，甚至高于先前报道的双频Doherty PA。此外，建议的PA，这是使用10-W的GaN HEMT制造，可以输出超过34.3 dBm的功率与峰均比为7 dB的并发模式，显示出显着的并发双频PA的功率利用率。
The behavior of power amplifiers (PAs) driven by concurrent dual-band signals is analyzed theoretically in this paper. According to the analysis, the impedance matching at intermodulation (IM) frequency is very important for PAs working in concurrent mode. Based on the concept of IM impedance tuning, a family of new operation modes can be introduced, including concurrent Class-A, Class-AB, Class-B, and Class-C. The theoretical performance of these modes are derived and the overdrive effects of them are also discussed. A possible structure is proposed to implement the proposed IM impedance tuning, and a concurrent Class-AB dual-band example PA operating at 1.9-2.6-GHz long-term evolution (LTE) bands is demonstrated. Experimental results show good consistence with the theoretical analysis, and the concurrent Class-AB PA prototype exhibits higher than 36.1% power-added efficiency in concurrent mode when driven by 10- and 15-MHz LTE signals in two bands concurrently. To our best knowledge, this is the state-of-the-art efficiency performance of concurrent dual-band PAs, even higher than previously reported dual-band Doherty PAs. Additionally the proposed PA, which is fabricated using a 10-W GaN HEMT, can output more than 34.3-dBm power with a peak-to-average ratio of 7 dB in concurrent mode, showing a remarkable power utilization factor for concurrent dual-band PAs.
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DOI：
10.1109/tmtt.2011.2163802
发表时间：
2011-09
影响因子：
4.3
作者：
S. Bassam;M. Helaoui;F. Ghannouchi
通讯作者：
S. Bassam;M. Helaoui;F. Ghannouchi
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/mwsym.2013.6697505
发表时间：
2013-06
期刊：
2013 IEEE MTT-S International Microwave Symposium Digest (MTT)
影响因子：
--
作者：
Xiaofan Chen;Wen-hua Chen;F. Ghannouchi;Zhenghe Feng
通讯作者：
Xiaofan Chen;Wen-hua Chen;F. Ghannouchi;Zhenghe Feng
DOI：
10.1109/tmtt.2011.2164089
发表时间：
2011-09
影响因子：
4.3
作者：
Wen-hua Chen;S. Bassam;Xiang Li;Yucheng Liu;K. Rawat;M. Helaoui;F. Ghannouchi;Zhenghe Feng
通讯作者：
Wen-hua Chen;S. Bassam;Xiang Li;Yucheng Liu;K. Rawat;M. Helaoui;F. Ghannouchi;Zhenghe Feng
DOI：
10.1109/tmtt.2008.2004897
发表时间：
2008-11-01
影响因子：
4.3
作者：
Colantonio, Paolo;Giannini, Franco;Piazzon, Luca
通讯作者：
Piazzon, Luca