杭州电子科技大学学报
杭州電子科技大學學報
항주전자과기대학학보
JOURNAL OF HANGZHOU DIANZI UNIVERSITY
2013年
6期
25-28
,共4页
Doherty结构%功率放大器%GaN HEMT%建模
Doherty結構%功率放大器%GaN HEMT%建模
Doherty결구%공솔방대기%GaN HEMT%건모
Doherty structure%power amplifier%GaN HEMT%modeling
该文设计了一款应用于卫星通信基站的Ku波段高效率功率放大器。设计电路中的有源器件为Triquint 0.25μm GaN HEMT功率管,首先对该功率晶体管等效电路模型进行参数提取,用HFSS软件对无源元件进行电磁场仿真,用Agilent ADS软件对电路有源和无源进行了联合仿真。电路拓扑结构为Doherty结构,其中主放大器和辅助放大器分别设计,再通过Wilkinson功分器两路合成。仿真结果显示,在1414.5 GHz频率下,设计的功率放大器输出功率大于12 W,功率增益大于8 dB,功率附加效率高于45%。
該文設計瞭一款應用于衛星通信基站的Ku波段高效率功率放大器。設計電路中的有源器件為Triquint 0.25μm GaN HEMT功率管,首先對該功率晶體管等效電路模型進行參數提取,用HFSS軟件對無源元件進行電磁場倣真,用Agilent ADS軟件對電路有源和無源進行瞭聯閤倣真。電路拓撲結構為Doherty結構,其中主放大器和輔助放大器分彆設計,再通過Wilkinson功分器兩路閤成。倣真結果顯示,在1414.5 GHz頻率下,設計的功率放大器輸齣功率大于12 W,功率增益大于8 dB,功率附加效率高于45%。
해문설계료일관응용우위성통신기참적Ku파단고효솔공솔방대기。설계전로중적유원기건위Triquint 0.25μm GaN HEMT공솔관,수선대해공솔정체관등효전로모형진행삼수제취,용HFSS연건대무원원건진행전자장방진,용Agilent ADS연건대전로유원화무원진행료연합방진。전로탁복결구위Doherty결구,기중주방대기화보조방대기분별설계,재통과Wilkinson공분기량로합성。방진결과현시,재1414.5 GHz빈솔하,설계적공솔방대기수출공솔대우12 W,공솔증익대우8 dB,공솔부가효솔고우45%。
A Ku band high efficiency power amplifier is designed which will be applied for satellite communication base station .The active device of the design circuit is 0 .25 μm GaN HEMT from Triquint Corporation . Parameter extraction of an equivalent circuit model for the transistor is carried out , and the passive devices are simulated using HFSS software , then the active device and passive devices are co-simulated using Agilent ADS software .Doherty structure is proposed for the circuit .The main power amplifier and auxiliary power amplifier are designed respectively and then combined by a Wilkinson power divider .The simulated results show that the proposed PA has an output power more than 12 Watts, a power gain higher than 8 dB, a power added efficiency higher than 45%.