电路板介电常数测量方法  

PCB dielectric constant measurement method

作　　者：刘宏梅[1] 房少军[1] 王强[1] 赵艺娜[1] 

机构地区：[1]大连海事大学信息科学技术学院,辽宁大连116026

出　　处：《大连海事大学学报》2011年第3期115-119,共5页Journal of Dalian Maritime University

基　　金：国家自然科学基金资助项目(61071044;0771032);交通运输部交通应用基础研究项目(2010-329-225-030)

摘　　要：总结测量及求解电路板介电常数实部的4种方法——矩形谐振腔法、开路微带线谐振法、环形微带谐振法、时域测量法,讨论了微带介质谐振器损耗角正切的测量及求解方法.针对4种求解方法开发计算软件,制作测试夹具及微波电路测试板.提出用两根开路微带线代替一根开路微带线,通过测量其时域波形求解介电常数实部的改进方法.采用Ansoft HFSS11软件进行仿真,比较了各种方法的测量结果和仿真结果.结果表明,矩形谐振腔法精度较高.Four methods including rectangular resonant cavity method,open-circuit microstrip line method,annular-ring microstrip resonance method,time domain measurement method for measuring and solving the real part of PCB dielectric constant were summarized,and the methods for measuring and solving tangent of the loss angle of the microstrip dielectric resonator were also discussed.The calculation softwares aiming at above four solving methods were developed,and test fixtures and microwave circuit test panel were produced.An improved method with two root open-circuit microstrip lines instead of one root open-circuit microstrip line was proposed,and the real part of dielectric constant was solved by measuring the time domain waveform.Ansoft HFSS11 simulation software was used,and the experimental and simulation results of the four methods were compared.Result show that the rectangular cavity resonator method has high precision.

关 键 词：电路板 介电常数 时域测量 计算软件 

分 类 号：TN815[电子电信—信息与通信工程]