X波段宽带数控移相器180°移相单元的设计  

Design of 180°Phase Shift Unit of X-Band Logic Control Phase Shifter

作　　者：陈思婷 陈铖颖 马骁[2] 杨新豪 王尘 CHEN Siting;CHEN Chengying;MA Xiao;YANG Xinhao;WANG Chen(School of Optoelectronic&Communication Engineering,Xiamen University of Technology,Xiamen 361024 China;Institute of Microelectronics of the Chinese Academy of Sciences,Beijing 100029,China)

机构地区：[1]厦门理工学院光电与通信工程学院,福建厦门361024 [2]中国科学院微电子研究所,北京100029

出　　处：《厦门理工学院学报》2023年第1期17-23,共7页Journal of Xiamen University of Technology

基　　金：国家自然科学基金项目(61904155);厦门市重大科技计划项目(3502Z20221022);厦门市青年创新基金项目(3502Z20206074)。

摘　　要：基于0.25μm GaAs pHEMT工艺,设计出一种应用于X波段宽带数控移相器的180°移相单元。该设计采用SPDT开关和五阶高通-低通滤波拓扑结构,通过改进SPDT开关、提升滤波器的阶数和改变180°移相单元的切换方式改善电路的插入损耗和相位平坦度,消除由前32个相位产生的相位累积误差。仿真结果表明,180°移相单元插入损耗为2.42~2.67 dB,相移范围为179°~182°,输入输出电压驻波比小于1.15,在同样的结构下,本设计可实现更优异的性能和更紧凑的芯片面积。Based on 0.25μm GaAs pHEMT process,a 180°phase shifter is designed for Xband logic control phase shifters,using SPDT switch and fifth order highpass/lowpass filter topology.By adding the order of the filter and changing the switching mode of the 180°phase shifter unit,the insertion loss and phase flatness of the circuit is improved,and the phase accumulation error caused by the first 32 phases eliminated.Simulation tests show that the insertion loss of 180°phase shift unit is 2.42-2.67 dB,the phase shift range is 179°-182°,and the inputoutput voltage outstanding wave ratio is less than 1.15,indicating thatthe design can achieve better performance and more compact chip area under the same topology.

关 键 词：X波段数控移相器 高通-低通网络型移相器结构 180°移相单元 GaAs pHEMT工艺 

分 类 号：TN432[电子电信—微电子学与固体电子学]