波峰型低损耗负群时延微波电路研究  

Study on waveshape low loss negative group delay microwave circuit

作　　者：Blaise Ravelo 李宁东 万发雨[1] 葛俊祥[1] Blaise Ravelo;LI Ningdong;WAN Fayu;GE Junxiang(School of Electronic and Information Engineering,NanjingUniversity of Information Science and Technology,Nanjing210044)

机构地区：[1]南京信息工程大学电子与信息工程学院,南京210044

出　　处：《南京信息工程大学学报（自然科学版）》2020年第1期127-134,I0036,共9页Journal of Nanjing University of Information Science & Technology（Natural Science Edition）

基　　金：国家自然科学基金(61601233,61971230);北京东方计量测试研究所刘尚合院士专家工作站静电研究基金(BOIMTLSHJD20181003),江苏省双创团队人才计划(SRCB201526);江苏省“信息与通信工程”优势学科建设工程项目。

摘　　要：本文提出了一种波峰形状的低损耗微波负群时延微带电路,该电路主要由四条相同的微带传输线,两条相同的耦合微带线以及T形连接器组成.依据等效电路拓扑结构,基于微波电路理论推导出电路的S参数模型以及负群时延公式.利用ADS仿真软件对电路结构进行优化,并进行了实物的加工与测试.测试结果表明:在中心频率1.017 GHz时,电路的最大群时延为-2.46 ns,插入损耗为-2.1 dB以及反射损耗为-13 dB.实测结果与仿真结果以及理论模型结果具有很好的一致性.In this study,we proposed a low-loss microwave negative group delay circuit with a waveshape.The proposed circuit is composed mainly of four identical microstrip transmission lines,two identical coupled microstrip lines,and a T-shaped connector.After describing the equivalent circuit topology,the S-parameter model and the negative group delay formula of the circuit were derived using microwave circuit theory.The circuit structure was optimized using ADS simulation,and the fabrication and measurement were carried out.Test results showed that at a center frequency of 1.017 GHz,the maximum group delay of the circuit was-2.46 ns,the insertion loss was-2.1 dB,and the reflection loss was-13 dB.The measured results were in good agreement with results from both simulations and theoretical calculations.

关 键 词：低损耗 负群时延 耦合微带线 S参数 

分 类 号：TN710[电子电信—电路与系统]