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High Spurious Suppression of the Dual-Mode Patch Bandpass Filter Using Defected Ground Structure

Min Hung WENG, Hung Wei WU, Ru Yuan YANG, Tsung Hui HUANG, Mau-Phon HOUNG

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Summary :

This investigation proposes a novel dual-mode patch bandpass filter (BPF) that uses defect ground structure (DGS) to suppress spurious response. The proposed dual-mode patch BPF has exhibits a wide stopband characteristic owing to that uses the bandgap resonant characteristic of DGS in the harmonic frequency of the dual-mode patch BPF. The novel proposed filter demonstrates the frequency characteristics with center frequency f0 = 2.2 GHz, 3-dB bandwidth (FBW) of 8% and wider stopband from 2.6 to 6 GHz at the level of -35 dB. The experimental and simulated results agree.

Publication
IEICE TRANSACTIONS on Electronics Vol.E87-C No.10 pp.1738-1740
Publication Date
2004/10/01
Publicized
Online ISSN
DOI
Type of Manuscript
LETTER
Category
Microwaves, Millimeter-Waves

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