2.5～14.5GHz分布式功率放大器设计

doi:10.3969/j.issn.1001-2400.2018.01.016

西安电子科技大学学报

2.5～14.5GHz分布式功率放大器设计

张瑛1,2,3;马凯学3;张翼1,2;张长春1,2;周洪敏2

(1. 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，江苏南京 210046；
2. 南京邮电大学电子科学与工程学院，江苏南京 210046;
3. 电子科技大学物理电子学院，四川成都 611731)

收稿日期:2017-01-12 出版日期:2018-02-20 发布日期:2018-03-23
作者简介:张瑛(1980-), 男, 副教授, E-mail: zhangying@njupt.edu.cn
基金资助:
国家自然科学基金资助项目(61106021); 中国博士后科学基金资助项目(2015M582541); 江苏省高校自然科学基金资助项目(15KJB510020); 南京邮电大学科研基金资助项目(NY215140，NY215167)

Design of a 2.5～14.5GHz distributed power amplifier

ZHANG Ying1,2,3;MA Kaixue3;ZHANG Yi1,2;ZHANG Changchun1,2;ZHOU Hongmin2

(1. National and Local Joint Engineering Lab. of RF Integration and Micro-assembly Technology, Nanjing Univ. of Posts and Telecommunications, Nanjing 210046, China;
2. School of Electronic Science & Engineering, Nanjing Univ. of Posts and Telecommunications, Nanjing 210046, China;
3. School of Physical Electronics, Univ. of Electronic Science and Technology of China, Chengdu 611731, China)

Received:2017-01-12 Online:2018-02-20 Published:2018-03-23

摘要/Abstract

摘要：

对分布式放大器的工作原理和人工传输线的阻抗特性进行了分析，在此基础上采用0.18μm CMOS工艺设计并实现了一种具有三级增益单元的分布式功率放大器．放大器中的增益单元采用了具有峰化电感的共源共栅放大器结构，并通过增大人工传输线的终端负载和优化片上电感的取值使放大器输入和输出端口具有良好的阻抗匹配，同时有效地提升了分布式功率放大器的增益和输出功率．芯片测试结果表明，该放大器3dB带宽达到12GHz(2.5～14.5GHz)，3～14GHz频率范围内增益为9.8dB，带内增益平坦度为±1dB，输出功率为4.3～10.3dBm，功率附加效率为1.7％～6.9％．

关键词: 分布式放大器, 人工传输线, 阻抗匹配, 功率附加效率, 峰化电感

Abstract:

The operation principle of distributed amplifiers and the impedance characteristic of artificial transmission lines (ATLs) are analyzed, and a distributed power amplifier consisting of three gain cells is designed and fabricated by 0.18μm complementary metal oxide semiconductor (CMOS) technology. The peaking inductor is used to enhance the gain and the reverse isolation of the amplifier in high frequency. The termination loads of ATLs are increased and the values of on-chip inductors are optimized to provide good impedance matching, while improving the output power and efficiency. Measured results show that the amplifier has a 3dB bandwidth of 12GHz (2.5～14.5GHz) and provides an average forward gain of 9.8dB from 3 to 14GHz with a gain flatness of ±1dB. In the desired band, the output power at 1dB gain compression point (P_1dB) is from 4.3 to 10.3dBm while the power added efficiency (PAE) is from 1.7％ to 6.9％.

Key words: distributed amplifier, artificial transmission line, impedance matching, power added efficiency, peaking inductor

张瑛;马凯学;张翼;张长春;周洪敏. 2.5～14.5GHz分布式功率放大器设计[J]. 西安电子科技大学学报, 2018, 45(1): 88-92+155.

ZHANG Ying;MA Kaixue;ZHANG Yi;ZHANG Changchun;ZHOU Hongmin. Design of a 2.5～14.5GHz distributed power amplifier[J]. Journal of Xidian University, 2018, 45(1): 88-92+155.

参考文献

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2.5～14.5GHz分布式功率放大器设计

Design of a 2.5～14.5GHz distributed power amplifier

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