A Novel Dual-Mode Wideband Band Pass Filter

A novel Wideband (WB) Bandpass Filter (BPF) with improved passband performance using a Defected Ground Structure (DGS) is presented in this paper. The proposed BPF is composed of two novel basic WB resonators and six Dumbbell-Shaped (DS) DGSs. By cascading resonators we can achieve better skirt char...

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Bibliographic Details
Published in:Applied Computational Electromagnetics Society journal 2014-09, Vol.29 (9), p.735
Main Authors: Ahmadi, A, Makki, S V, Lalbakhsh, A, Majidifar, S
Format: Article
Language:English
Subjects:
Bandpass filters
Broadband
Resonators
Online Access:Get full text
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Summary:A novel Wideband (WB) Bandpass Filter (BPF) with improved passband performance using a Defected Ground Structure (DGS) is presented in this paper. The proposed BPF is composed of two novel basic WB resonators and six Dumbbell-Shaped (DS) DGSs. By cascading resonators we can achieve better skirt characteristics, and by using DS-DGSs under interdigital coupled I/O lines we can improve the return loss within the passband. The simulated and measured results are found in good agreement with each other showing a wide passband from 4.93 to 11.62 GHz, a wide upper stopband with around 25 dB attenuation up to 20 GHz, and sharp roll-offs around 0.03 in lower and upper edges.
ISSN:1054-4887
1943-5711