A microstrip filter direct-coupled amplifier based on active  

作　　者：Yang GAO Fan ZHANG Yingying QIAO Jiawei ZANG Lei LI Xiaobang SHANG 

机构地区：[1]School of Physics and Microelectronics,Zhengzhou University,Zhengzhou450001,China [2]School of Physics,University of Electronic Science andTechnology of China,Chengdu 610054,China [3]CTTL-System Laboratory,ChinaAcademy of Information and Communications Technology,Beijing100191,China [4]National Physical Laboratory,Teddington TW110LW,UK

出　　处：《Frontiers of Information Technology & Electronic Engineering》2021年第9期1260-1269,共10页信息与电子工程前沿（英文版）

基　　金：the National Natural Science Foundation of China(No.62001520)。

摘　　要：This paper presents a methodology of designing an amplifier integrated with a microstrip filter using an active coupling matrix.The microstrip filter is directly coupled to the active device,and the integrated filter amplifier can achieve filtering as well as matching functionalities,simultaneously,eliminating the need for separate matching networks.The filter amplifier is repre-sented by an active coupling matrix,with additional columns and rows in the matrix corresponding to the active transistor.The matrix can be used to calculate the S-parameter responses(i.e.,the return loss and the gain)and the initial dimensions of the integrated device.Moreover,the integration of a filter and an amplifier leads to a reduced loss and a more compact architecture of the devices.An X-band microstrip filter amplifier has been designed and demonstrated as an example.Microstrip technology has been chosen because of its appealing advantages of easy fabrication,low cost,and most importantly,easy integration with active devices.

关 键 词：AMPLIFIER Filter–amplifier integration MICROSTRIP Coupling matrix 

分 类 号：TN454[电子电信—微电子学与固体电子学]