基板集成波导带通后置滤波器的损耗

Cheng Zhao, C. Fumeaux, C. Lim
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引用次数: 2

摘要

插入损耗是衡量衬底集成波导(SIW)带通滤波器质量的重要指标。本文首先设计了6个具有无损模式匹配码的SIW切比雪夫带通后置滤波器。所考虑的滤波器设计为中心频率为10.5 GHz,分数带宽为9.52%的各种阶数。然后用全波电磁求解器模拟这些滤波器,以研究影响性能的各种欧姆和介电损耗的贡献。特别定量分析了金属包层和过孔电导率、介质损耗正切和衬底厚度的变化对插入损耗的影响。为了验证,制作了一个原型滤波器,将仿真结果与实验结果进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Losses in substrate integrated waveguide band-pass post filters
Insertion loss is a crucial specification to judge the quality of a substrate integrated waveguide (SIW) band-pass filter. In this paper, six Chebyshev band-pass post filters in SIW technology are firstly designed with a lossless mode-matching code. The considered filters are designed with various orders for a center frequency of 10.5 GHz and a fractional bandwidth of 9.52%. These filters are then simulated with a full-wave electromagnetic solver in order to investigate the various contributions of ohmic and dielectric losses affecting the performance. In particular, the influence on the insertion loss of the variations of the metal cladding and vias conductivity, the dielectric loss tangent and the thickness of the substrate is quantitatively analyzed. For validation, one prototype filter is fabricated to compare the simulations to experimental results.
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