360°低插损小型化反射式移相器设计  

Low-loss and compact reflective-type phase shifter with full 360°phase shift range

作　　者：马文建 陈凯[1] 盛瀚民 邹培 Ma Wenjian;Chen Kai;Sheng Hanmin;Zou Pei(School of Automation Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China;Tenth Institute of China Electronics Technology Group Corporation,Chengdu 610030,China)

机构地区：[1]电子科技大学自动化工程学院,成都611731 [2]中国电子科技集团第十研究所,成都610030

出　　处：《电子测量与仪器学报》2022年第5期21-29,共9页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(61903066);国家重点研发计划(2020YFB1711000);四川省重点仪器专项项目(2019ZDZX0045)资助。

摘　　要：针对第5代移动通信大规模多输入多输出(massive MIMO)和无线回传系统中移相阵列的应用需求,本文对反射式移相器(RTPS)的模型拓扑进行了对比分析,提出了四元件双可调(FEDA)负载拓扑的设计方法和相位变换的调整方式,研究了移相步进和插入损耗的影响因素,采用数字变容管(DTC)进行RTPS的调谐设计。实验结果表明,在4.4~5.0 GHz全频段范围内实测移相范围大于360°,移相步进小于12°,插入损耗小于1.8 dB,尺寸仅为10 mm×8 mm,兼具低插损、小型化、大带宽、高精度、易控制等优点。In response to the application requirements of phase-shifting arrays in massive MIMO and wireless backhaul systems for the fifth-generation mobile communications,in this paper the topology of the reflection-type phase shifter(RTPS)is compared and analyzed,the design method of the four-element dual-adjustable(FEDA)load topology and the adjustment method of phase conversion are proposed,and the influence factors of phase shift step and insertion loss are analyzed.Moreover,the digital tunable capacitor(DTC)is used for RTPS tuning design.The experimental results show that the RTPS in this paper has a measured phase shift range greater than 360°,a phase shift step less than 12°,an insertion loss less than 1.8 dB and the size only 10 mm×8 mm in the full frequency range of 4.4~5.0 GHz.In summary,this RTPS has the advantages of low insertion loss,miniaturization,large bandwidth,high precision and easy control.

关 键 词：反射式移相器 数字变容管 相控阵 空域滤波 

分 类 号：TN623[电子电信—电路与系统]