Planar Microstrip UWB Bandpass Filter with Quad Notched Bands and High Selectivity
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Published:2021-06-17
Issue:4
Volume:14
Page:493-499
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ISSN:2352-0965
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Container-title:Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering)
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language:en
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Short-container-title:EEENG
Author:
Gao Mingming1,
Xu Keda1ORCID,
Nan Jingchang1,
Wang Li1
Affiliation:
1. School of Electrics and Information Engineering, Liaoning Technical University, Huludao, China
Abstract
Background:
This study aims at solving the problems of large design size and insufficient
number of the notched band for traditional ultra-wideband (UWB) filters. A planar compact
microstrip UWB bandpass filter (BPF) with quad notched bands and good selectivity is proposed
using a modified multiple-mode resonator (MMR) and defected ground structure (DGS).
Methods:
The MMR consists of a stepped impedance stub above and two pairs of open-circuited
stubs on both sides, which can generate the passband and double notched bands of UWB filter, the
other two notched bands are obtained by DGS.
Results:
The UWB filter with quad notched bands respectively centered at 3.9 GHz, 5.7 GHz,
7.9 GHz, and 9.8 GHz is fabricated and measured.
Conclusion:
The measured results are basically consistent with the simulated results, which proves
the correctness and practicability of the UWB filter.
Funder
Liaoning Natural Science Foundation Guidance Plan
Liaoning Special Professorship Project
National Natural Science Foundation
National Natural Science Foundation of China Youth Fund
Publisher
Bentham Science Publishers Ltd.
Subject
Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials