Design of Quad-Band Filter Using SIR and DGS

Xinge Wang, Ling Wang, Wanyin Yang, Yimei Zhang
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引用次数: 5

Abstract

A novel quad-band microstrip bandpass filter (BPF) using stepped impedance resonators (SIR), stub loaded resonator(SLR) and defect ground structure(DGS), which can be utilized in Fourth Generation Mobile Telephone Mobile Communication Standard(LTE-TDD), Direct To Home(DTH), 5-th Generation(5G) and Digital Microwave Relay Communication. The BPF was modeled and simulated by using the Ansys HFSS software. And the fabricated filter has the minimum insertion losses of 0.67 dB, 1.5 dB, 0.3 dB and 2.1 dB and the return losses 19.5 dB, 11.8 dB, 20.8 dB and 14.8 dB. By tuning the parameter of DGS, a multi-band filter can be easily optimized. This study provides a simple and effective method to design a quad-band filter with low insertion loss and compact size.
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基于SIR和DGS的四频带滤波器设计
一种采用阶跃阻抗谐振器(SIR)、短段负载谐振器(SLR)和缺陷接地结构(DGS)的新型四带微带带通滤波器(BPF),可用于第四代移动电话移动通信标准(LTE-TDD)、直连到家(DTH)、第5代(5G)和数字微波中继通信。利用Ansys HFSS软件对BPF进行了建模和仿真。该滤波器的最小插入损耗分别为0.67 dB、1.5 dB、0.3 dB和2.1 dB,回波损耗分别为19.5 dB、11.8 dB、20.8 dB和14.8 dB。通过调整DGS的参数,可以很容易地优化多带滤波器。本研究提供了一种简单有效的方法来设计一种低插入损耗、体积小的四带滤波器。
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