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A Dual Mode BPF with Improved Spurious Response Using DGS Cells Embedded on the Ground Plane of CPW
Min-Hang WENG Chang-Sin YE Cheng-Yuan HUNG Chun-Yueh HUANG
IEICE TRANSACTIONS on Electronics
Publication Date: 2008/02/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Microwaves, Millimeter-Waves
bandpass filter (BPF), coplanar-waveguide (CPW), dual-mode resonator, rejection, spurious response, defected ground structure (DGS),
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A novel dual mode bandpass filter (BPF) with improved spurious response is presented in this letter. To obtain low insertion loss, the coupling structure using the dual mode resonator and the feeding scheme using coplanar-waveguide (CPW) are constructed on the two sides of a dielectric substrate. A defected ground structure (DGS) is designed on the ground plane of the CPW to achieve the goal of spurious suppression of the filter. The filter has been investigated numerically and experimentally. Measured results show a good agreement with the simulated analysis.