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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[2] i. bahl and p. bhartia, microwave solid state circuit design, wiley interscience, 1988.
[3] steve c. cripps. rf power amplifiers for wireless communications, artech house, inc., 1999.
[4] aligent corporation. ads students'guide.
[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.
