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High Selectivity Dual-Band Bandpass Filter with Flexible Passband Frequencies and Bandwidths

机译:具有灵活的通带频率和带宽的高选择性双频带带通滤波器

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摘要

A short-ended resonator with open stub loaded is presented in this paper. Resonance property is analyzed based on the transmission line theory. Analysis reveals that the odd/even-mode resonance frequency of the proposed resonator can be conveniently controlled. To realize two controllable bandwidths, two different coupling paths are introduced in the filter design. Furthermore, to improve the filter selectivity, the source-load coupling is adopted to create four transmission zeros (TZs) near the edges of the two passbands. Thus, a dual-band bandpass filter (BPF) with high selectivity can be achieved. One filter with two passband frequencies at 1.01 GHz and 2.4 GHz is designed and fabricated to provide an experimental verification on the design method.
机译:本文介绍了一种短端谐振器,其负载为开路短截线。基于传输线理论分析共振特性。分析表明,所提出的谐振器的奇/偶模谐振频率可以方便地控制。为了实现两个可控制的带宽,在滤波器设计中引入了两个不同的耦合路径。此外,为了提高滤波器的选择性,采用源-负载耦合在两个通带的边缘附近创建四个传输零(TZ)。因此,可以实现具有高选择性的双频带带通滤波器(BPF)。设计并制造了一个具有两个通带频率分别为1.01 GHz和2.4 GHz的滤波器,以对设计方法进行实验验证。

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  • 作者单位

    Department of Communication Engineering, Nanjing University of Science and Technology, Nanjing210094, China,Faculty of Mathematics and Physics, Huaiyin Institute of Technology, Huai'an 223003, China;

    Department of Communication Engineering, Nanjing University of Science and Technology, Nanjing210094, China;

    Department of Communication Engineering, Nanjing University of Science and Technology, Nanjing210094, China;

    School of Electronics and Information, Nantong University, Nantong 226019, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Bandwidth; dual-band bandpass filter; passband frequency; transmission zero;

    机译:带宽;双带通滤波器通带频率;传输零;

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