Design of compact dual‐ and tri‐band bandpass filters using λ/4 and λ/2 resonators
Design of compact dual‐ and tri‐band bandpass filters using λ/4 and λ/2 resonators
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DOI：
10.1002/mop.24111
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发表时间：
2009-03
影响因子：
1.5
通讯作者：
Fulong Chen;Q. Chu;Zhihong Tu
中科院分区：
文献类型：
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作者：
Fulong Chen;Q. Chu;Zhihong Tu
本文提出了一种设计具有独立控制中心频率和带宽的双带和三带带通滤波器的新方法。λ/4和λ/2谐振器用于获得双带和三带响应。λ/4谐振器设计工作在较低的通带(s)和λ/2谐振器设计工作在较高的通带。每个通带的带宽可以通过调节耦合间隙来独立调谐。为了验证所提出的概念，设计和制作了两个滤波器的实验实例，仿真结果与测量结果吻合良好。©2009 Wiley期刊公司微波光学学报，2009；在线发表于Wiley InterScience （www.interscience.wiley.com）。DOI 10.1002 / mop.24111
This article presents a novel approach for designing dual‐ and tri‐band bandpass filters with independently controlled center frequencies and bandwidths. λ/4 and λ/2 resonators are used to obtain dual‐ and tri‐band responses. λ/4 resonators are designed to operate at the lower passband(s) and λ/2 resonators are designed to operate at the higher passband. The bandwidth of each passband can be tuned independently by adjusting the coupling gap. To verify the presented concept, two experimental examples of filters have been designed and fabricated and good agreements are shown between the simulation and the measurement. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 638–641, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24111