[1] Zhang Ying, , Ma Kaixue, et al. Design of a distributed power amplifierbased on T-type matching networks [J]. Journal of Southeast University (English Edition), 2016, 32 (3): 278-284. [doi:10.3969/j.issn.1003-7985.2016.03.004]

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Design of a distributed power amplifierbased on T-type matching networks()

一种基于T型匹配网络的分布式功率放大器设计

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

32

Issue:

2016 3

Page:

278-284

Research Field:

Circuit and System

Publishing date:

2016-09-20

Info

Title:

Design of a distributed power amplifierbased on T-type matching networks

一种基于T型匹配网络的分布式功率放大器设计

Author(s):

Zhang Ying^{1, 2, 3}, Ma Kaixue³, Zhou Hongmin¹, Guo Yufeng^{1, 2}

¹College of Electronics Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210046, China
²National and Local Joint Engineering Laboratory of Radio Frequency Integration and Micro Assembly Technology, Nanjing University of Posts and Telecommunications, Nanjing 210046, China
³School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 611731, China

张瑛^{1, 2, 3}, 马凯学³, 周洪敏¹, 郭宇锋^{1, 2}

¹南京邮电大学电子科学与工程学院, 南京 210046; ²南京邮电大学射频集成与微组装技术国家地方联合工程实验室, 南京 210046; ³电子科技大学物理电子学院, 成都 611731

Keywords:

distributed amplifier;  impedance matching;  power added efficiency;  T-type network

分布式放大器;  阻抗匹配;  功率附加效率;  T型网络

PACS:

TN43

DOI:

10.3969/j.issn.1003-7985.2016.03.004

Abstract:

The impedance characteristics of distributed amplifiers are analyzed based on T-type matching networks, and a distributed power amplifier consisting of three gain cells is proposed. Non-uniform T-type matching networks are adopted to make the impedance of artificial transmission lines connected to the gate and drain change stage by stage gradually, which provides good impedance matching and improves the output power and efficiency. The measurement results show that the amplifier gives an average forward gain of 6 dB from 3 to 16.5 GHz. In the desired band, the input return loss is typically less than -9.5 dB, and the output return loss is better than -8.5 dB. The output power at 1-dB gain compression point is from 3.6 to 10.6 dBm in the band of 2 to 16 GHz while the power added efficiency(PAE)is from 2% to 12.5%. The power consumption of the amplifier is 81 mW with a supply of 1.8 V, and the chip area is 0.91 mm×0.45 mm.

基于T型匹配网络对分布式放大器的阻抗特性进行了分析, 并设计了一个三级分布式功率放大器.设计中采用非均匀的T型匹配网络结构使得与栅极和漏极相连的人工传输线阻抗逐级渐变, 实现阻抗匹配的同时提升了放大器的输出功率及效率.测试结果表明:该放大器在频带3~16.5 GHz带宽内平均增益为6 dB, 输入回波损耗小于-9.5 dB, 输出回波损耗小于-8.5 dB;2~16 GHz频带内的1 dB增益压缩点处输出功率达到3.6~10.6 dBm, 功率附加效率为2%~12.5%.电源电压为1.8 V时放大器功耗为81 mW, 芯片面积为0.91 mm×0.45 mm.

References:

[1] Nikandish G, Medi A. Unilateralization of MMIC distributed amplifiers [J]. IEEE Transactions on Microwave Theory and Techniques. 2014, 62(12): 3041-3052. DOI:10.1109/tmtt.2014.2361341.
[2] Kim J, Kim Y, Lee S, et al. A broadband power-reconfigurable distributed amplifier [C]//IEEE MTT-S International Microwave Symposium Digest. Montreal, Canada, 2012: 1-3.
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Memo

Memo:

Biography: Zhang Ying(1980—), male, doctor, associate professor, zhangying@njupt.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.61106021), the Postdoctoral Science Foundation of China(No.2015M582541), the Natural Science Foundation of Higher Education Institutions of Jiangsu Province(No.15KJB510020), the Research Fund of Nanjing University of Posts and Telecommunications(No.NY215140, No.NY215167).
Citation: Zhang Ying, Ma Kaixue, Zhou Hongmin, et al. Design of a distributed power amplifier based on T-type matching networks[J].Journal of Southeast University(English Edition), 2016, 32(3):278-284.DOI:10.3969/j.issn.1003-7985.2016.03.004.

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