A survey of active quasi-circulators  

作　　者：Bingjun Tang Li Geng 

机构地区：[1]School of Microelectronics,Xi’an Jiaotong University,Xi’an 710049,China

出　　处：《Journal of Semiconductors》2020年第11期61-70,共10页半导体学报（英文版）

摘　　要：With the development of multi-band wireless communication and the increasing data transmission rate,the circulator as an antenna interface must be able to work in multiple frequency bands and provides large bandwidth.It presents a high challenge to the design of circulators,especially the active quasi-circulators.In this survey,we review the representative active quasi-circulators and summarize three different techniques and the corresponding structures to show an incremental improvement of the isolation and bandwidth of the active quasi-circulators.In addition,we also compare the performance of several state-of-art active circulators,and analyze their advantages and disadvantages.Finally,we conclude the future trend of the active quasi-circulators.

关 键 词：active quasi-circulator MULTIBAND bandwidth isolation LINEARITY insertion loss 

分 类 号：TN820[电子电信—信息与通信工程]