| 新型三路Doherty功放的设计 |
| |
| 引用本文： | 陈俊,苏凯雄,姚金聪,吴怡. 新型三路Doherty功放的设计[J]. 微波学报, 2012, 28(4): 60-64 |
| |
| 作者姓名： | 陈俊 苏凯雄 姚金聪 吴怡 |
| |
| 作者单位： | 1. 福州大学物理与信息工程学院,福州,350002
2. 福建师范大学物理与光电学院,福州,350004 |
| |
| 基金项目： | 教育部新世纪优秀人才支持计划，2010年福建省重大专项，福州市市校科技合作项目，福州大学科技发展基金 |
| |
| 摘 要： | 为了提高数字电视发射机的效率,采用一种新型的三路Doherty电路。基于传输线理论和有源负载牵引理论,推导出三路Doherty的工作原理,同时利用ADS设计一个双3路Doherty电路,并用于数字电视发射机。仿真结果表明,该放大器在功率回退9.1dB时,出现第一个效率峰值点,在整个回退范围内具有3个效率峰值点。实测结果表明,在610MHz中心频率,54dBm输出功率下,该放大器的效率可达41.2%。
|
| 关 键 词： | 非对称 发射机 功率放大器 三路Doherty |
Design on a New Three Way Doherty Power Amplifier |
| |
| CHEN Jun,SU Kai-xiong,YAO Jin-cong,WU Yi. Design on a New Three Way Doherty Power Amplifier[J]. Journal of Microwaves, 2012, 28(4): 60-64 |
| |
| Authors: | CHEN Jun SU Kai-xiong YAO Jin-cong WU Yi |
| |
| Affiliation: | 1.Institute of Physics and Information Engineering of Fuzhou University,Fuzhou 350002,China; 2.Institute of Physics and Optoelectronics Engineering of Fujian Normal University,Fuzhou 350004,China) |
| |
| Abstract: | In order to improve the efficiency of Digital TV transmitter,a new type of three-way Doherty circuit is used.Based on the transmission line theory and active loadpull theory,this paper deduces the principle of the three-way Doherty,and with ADS to design a double three-way Doherty power amplifier and applicated it in the Digital TV transmitter.The simulation result shows that the amplifier reaches its first peak efficiency at the back-off 9.1 dB;and has three peak efficiency points at the whole back-off power range.And the measured result shows that,at 610 MHz frequency,the amplifier’s efficiency can reach 41.2% with 54dBm output power. |
| |
| Keywords: | asymmetrical transmitter power amplifier three-way Doherty |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《微波学报》浏览原始摘要信息 |
|
点击此处可从《微波学报》下载全文 |
|
