摘要
阐述了用微带短路线法,通过矢量网络分析仪量测短路微带线的反射系数,进行印刷电路板板材相对介电常数计算的方法。在给定的板材尺寸参数及材料特性下,通过ADS软体中进行的理论分析以及ANSOFT公司HFSS软体中进行的三维建模仿真分析,计算得出了不同频率点对应的相对介电常数值。同时分析了方案的误差对于阻抗设计的影响,进而验证了测量方案的可行性。考虑到板材介质的高频衰减,测量方法适用范围从100MHz～5GHz。
Based on shorvcircuit method on microstrip,It is described a way to solve the relative permittivity of printed circuit board with reflection coefficient measured by vector network analyzer. In the case of the given dimension of PCB and characteristic of material,we could obtain the relative permittivity values on different frequency, through both the theoretical analysis in Agilent ADS and 3D modeling analysis in Ansoft HFSS. Then we analyze the effect on impedance design due to deviation of relative permittivity and it verified the feasibility of the method. Considering the attenuation on high frequency,the method is applicable from 100 MHz to 5 GHz.
出处
《电子测量技术》
2013年第1期37-40,共4页
Electronic Measurement Technology
