基于传输线变压器的多载波功率放大器设计  

Design of multi-carrier power amplifier based on coaxial line transformer

作　　者：窦建华[1] 苏州[1] 杨学志[1] 吴永忠[1] 

机构地区：[1]合肥工业大学计算机与信息学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2011年第12期1827-1829,1920,共4页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(60672120);安徽省优秀青年科技基金资助项目(10040606Y09);安徽省自然科学基金资助项目(090412041)

摘　　要：文章设计了一种用于多载波广播发射的线性功率放大器,其功放管选用Freescale公司的增强型LD-MOS功率场效应管MRF6VP2600H;利用同轴线结构的传输线变压器(TLTs)与集总元件结合实现了高效的阻抗匹配;测试结果显示在88～108MHz频段内的功率增益大于20dB,三阶交调-20dBc,满足前馈系统中主功放的设计指标。A linear power amplifier was designed for multi-carrier broadcast transmission. The Freescale＇s enhanced LDMOS field-effect transistor MRF6VP2600H was employed and the high-efficient impedance match was provided by utilizing coaxial transmission line transformers（TLTs） and lumped components. The meas- urement results indicate that the designed power amplifier which works in the frequency band between 88 MHz and 108 MHz has a power gain of greater than 20 dB with a third-order harmonics of --20 dBc, and meets the design requirements of po wet amplifier of the feedforward system.

关 键 词：线性 传输线变压器 功率放大器 

分 类 号：TN722.75[电子电信—电路与系统]