收发异源FMCW太赫兹系统误差分析  

Error analysis for the FMCW terahertz system with different sources of transmitter and receiver

作　　者：刘伟[1] 刘德峰[1] 杨超[1] 林奈[2] 薛毅松 康键成 庄杰 LIU Wei;LIU Defeng;YANG Chao;LIN Nai;XUE Yisong;KANG Jiancheng;ZHUANG Jie(Beijing Changcheng Aeronautic Measurement and Control Technology Research Institute,Beijing 101111,China;The 10th Institute of China Electronics Technology Group Corporation,Chengdu Sichuan 610036,China;School of Information and Communication Engineering,University of Electronics Science and Technology of China,Chengdu Sichuan 611731,China)

机构地区：[1]航空工业北京长城航空测控技术研究所,北京101111 [2]中国电子科技集团公司第十研究所,四川成都610036 [3]电子科技大学信息与通信工程学院,四川成都611731

出　　处：《太赫兹科学与电子信息学报》2022年第1期74-79,共6页Journal of Terahertz Science and Electronic Information Technology

基　　金：国防科工局技术基础科研项目(JSZL2018205C004)。

摘　　要：近年来,随着太赫兹器件研究不断取得进展,对太赫兹收发前端的研究逐渐增多。随着工作频率的增加,以及带宽的增大,由器件非理想性能带来的误差成为影响太赫兹系统性能的重要因素。基于一个采用二级混频设计的收发异源调频连续波太赫兹系统,研究分析了时钟同步误差、调频非线性误差以及IQ不平衡问题所带来的误差。通过对3种误差的建模分析,为后续对误差进行消除和补偿提供了良好的理论基础。In recent years,the research for transmitter and receiver of terahertz is increasing with the development of terahertz devices.The working frequency and the bandwidth increase gradually,and the error caused by device non-ideality becomes an important factor affecting the performance of terahertz system.A Frequency Modulated Continuous Wave(FMCW)terahertz system with a two-stage mixing design is studied.This system has different sources of transmitter and receiver.The clock synchronization error,the frequency modulation nonlinear error,and the error from IQ unbalance are analyzed.The modeling of these three kinds of errors provides a theoretical basis for error elimination and compensation in the future.

关 键 词：太赫兹 调频连续波 调频非线性误差 时钟同步误差 IQ不平衡 

分 类 号：TN927[电子电信—通信与信息系统]