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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Compact Wideband Dual-Band SIW Bandpass Filters
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Compact Wideband Dual-Band SIW Bandpass Filters

机译：紧凑型宽带双带SIW带通滤波器

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摘要

A novel method to design compact wideband dual-band substrate integrated waveguide (SIW) bandpass filters (BPF) is proposed in this paper. By loading a novel beeline compact microstrip resonant cells (BCMRCs) with band-gap characteristics on top layer SIW, two wide passbands separated by a stopband are generated. In order to enable the filter to have lower reflection coefficients in the two passbands, we use tapered gradient line embedded with rectangular slots and loaded open stubs as the transition structure from microstrip line to SIW. The wideband dual-band BPF (DBBPF) is fabricated. The lower-band and upper-band fractional 3-dB bandwidths are 58.2% and 22.6%, while the measured minimum insertion losses (ILs) are 0.7 and 0.92 dB, respectively. The stepped-impedance open loop ring resonator (SIOLRR) is introduced in order to improve the selectivity of the filter. The wideband DBBPF with SIOLRR is studied, simulated and measured. Two transmission zeros are generated in the stop band between the two passbands. Good agreement between simulated and measured results can be obtained.
机译：本文提出了一种设计紧凑宽带双频带基板集成波导（SIW）带通滤波器（BPF）的新方法。通过在顶层SiW上装载具有带间隙特性的新型小型小型微路谐振细胞（BCMRC），产生由截止带分离的两个宽通带。为了使滤波器能够在两个通带中具有较低的反射系数，我们使用嵌入矩形槽的锥形梯度线和从微带线到SiW的过渡结构加载开口存根。宽带双频BPF（DBBPF）是制造的。下带和上部带分流3-DB带宽分别为58.2％和22.6％，而测量的最小插入损耗（ILS）分别为0.7和0.92dB。介绍阶梯式阻抗开环环谐振器（SIOLRR）以改善过滤器的选择性。使用SiolRR的宽带DBBPF，模拟和测量。在两个通带之间的止动频带中产生两个传输零。可以获得模拟和测量结果之间的良好一致性。

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