Effect of DGS Utilization on Characteristics of Square shaped CSRR-Based SIW BPF

2019 IEEE 5th International Conference on Wireless and Telematics (ICWT) Pub Date : 2019-07-01 DOI:10.1109/ICWT47785.2019.8978219

A. Latip, N. Ismail, O. T. Kurahman, A. Munir

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引用次数: 5

Abstract

This paper discusses the effect of defected ground structure (DGS) utilization on the characteristics of substrate integrated waveguide (SIW) bandpass filter (BPF) made of square shaped complimentary split ring resonator (CSRR). There are 2 pieces of DGS pattern with a round and square pattern made on the groundplane. Meanwhile the CSRR has 2 pairs of patterns consisting of an inner ring and an outer ring. The proposed SIW BPF was designed on a 1.6mm thick FR4 epoxy dielectric substrate with the size of 45mm × 40mm. The filter is designed to have the center frequency of 6.75 GHz with the frequency range from 3 GHz to 15 GHz. The investigated parameters of filter include DGS shape, CSRR dimension, distance between vias, and via diameter. It is found that the utilization of DGS and CSRR could enhance the filter characteristics. The characterization results show that the filter with square DGS patterns has the best performance among others with S11 value of −18.44 dB, S21 value of −3.01 dB, and fractional bandwidth of 122%.

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DGS的利用对基于csr的方形SIW BPF特性的影响

本文讨论了缺陷地结构(DGS)的利用对方形互补分环谐振器(CSRR)基板集成波导(SIW)带通滤波器(BPF)特性的影响。DGS图案有2张，在地平面上做了圆形和方形的图案。同时，CSRR具有由内环和外环组成的2对图案。所提出的SIW BPF设计在尺寸为45mm × 40mm的1.6mm厚FR4环氧介电基片上。该滤波器的中心频率设计为6.75 GHz，频率范围为3 GHz至15 GHz。研究了过滤器的参数包括DGS形状、CSRR尺寸、通孔间距和通孔直径。结果表明，利用DGS和CSRR可以提高滤波器的性能。表征结果表明，方形DGS模式滤波器的S11值为−18.44 dB, S21值为−3.01 dB，分数带宽为122%，性能最佳。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2019 IEEE 5th International Conference on Wireless and Telematics (ICWT)

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