作者：陈玉梅¹, 钱光弟¹, 龚兰²

作者单位：1. 电子科技大学自动化工程学院, 四川成都 610054;
2. 中国测试技术研究院, 四川成都 610021

关键词：宽带; 前馈; 传输线变压器; 微带; 匹配电路; 功率放大器

摘要：

功率放大器是射频前端中的关键部件,宽带是目前功率放大器的主要发展趋势。根据宽带功率放大器的设计原理,采用推挽结构晶体管,前馈线性化技术,传输线变压器和微带混和匹配电路,利用ADS进行仿真设计,成功的设计出一款宽带功率放大器。实现了多倍频程带宽、确保带内增益平坦、驻波小、线性范围和动态范围大。通过仿真和测试,得到较为理想的结果。

30MHz-512MHz wide-band power amplifier

CHEN Yu-mei¹, QIAN Guang-di¹, GONG Lan²

1. School of automation engineering, UESTC, Chengdu 610054, China;
2. Natinal Institute of Measurement and Testing Technology, Chengdu 610021, China

Abstract: Wide-band is the main trends of development of power amplifier, which is key component of broadband RF front end. Based on the design theory of power amplifier, a wide-band power amplifier was designed successfully by the push-pull transistor, the feedforward technical of linearization, the matching circuits of transmission line transformers and microstrip, and ADS simulation software. It realized Multi-octaves broadband, flat intraband gain, low standing wave ratio, long linear range and dynamic range. By means of simulation and test, perfect results were achieved.

Keywords: Wide-band; Feedforward; Transmission line transformers; Microstrip; Matching circuits; Power amplifier

2007, 33(2): 137-140  收稿日期: 2006-10-23;收到修改稿日期: 2006-12-18

基金项目: 

作者简介: 陈玉梅(1982-),女,硕士研究生,主要从事控制理论与控制工程研究。

参考文献

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[3] Steve C. Cripps. RF Power Amplifiers for Wireless Communications, Artech House, Inc., 1999.
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[5] Yong-Sung Cha etc., A New Design Method for Performance Improvement of High Power Amplifier by Using the Matching Circuit of Defected Ground Structure[C]. European Microwave Conference-Munich, 2003.