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Dual-band bandpass filters using SIRs with open-stub line and zero-degree feed structure

机译：使用带开路短截线和零度馈源结构的SIR的双带通滤波器

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摘要

A novel compact dual-band bandpass filter (DBPF) using SIRs with open-stub line and 0-degree feed structure is presented in this paper. The low-band is obtained by using hairpin type Stepped Impedance Resonators (SIR) split ring through electrical coupling, And by tuning a pair of open-stub lines the high-band is realized too. In order to improve the stop band attenuation, zero-degree feed structure is implemented to introduce three transmission zeros. So the proposed DBPF has high selectivity, and is also simple in design and compact in structure. Finally the proposed filter is designed and fabricated, and the simulation and test results are in good agreement.
机译：本文提出了一种新颖的紧凑型双频带带通滤波器（DBPF），该滤波器使用具有开路短截线和0度馈源结构的SIR。通过使用发夹式步进阻抗谐振器（SIR）开口环通过电耦合获得低频带，并且通过调谐一对开路短截线也可以实现高频带。为了改善阻带衰减，实现了零度馈送结构以引入三个传输零点。因此，所提出的DBPF具有高选择性，并且设计简单并且结构紧凑。最后，设计并制造了所提出的滤波器，仿真与测试结果吻合良好。

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