NDLI: Design of a SIR bandpass filter with spurious passband suppression using defected ground structure and Spurline

Content Provider	IEEE Xplore Digital Library
Author	Meng Lingqin Ren Long Huang Jingsong
Copyright Year	2012
Description	Author affiliation: School of Communication and Information Engineering, Shanghai University, 200072, Shanghai, China (Meng Lingqin; Ren Long; Huang Jingsong)
Abstract	A new structure of compact microstrip bandpass filter with wide out of band suppression has been proposed and implemented in this letter. It is proposed by using stub-loaded resonator, quarter-wavelength stepped impedance resonator (SIR), Dumbbell-Shape Defect Ground Structure (DGS) and symmetrical Spurline. By utilizing two forms of the SIR, the second harmonic can be eliminated. In order to suppress higher harmonics, the Spurline is needed. A dumbbell shape DGS which is etched in bottom-layer of the substrate, provides bandgap and slow-wave characteristics to improve the filter's performance. The BPF was fabricated, the measured results show that the proposed filter could obtain 20 dB rejection level in the stopband from 1.2 f0 to 3.2 f0. The experimental results show excellent agreements with theoretical results and the validity of the modeling method for the proposed compact bandpass filter.
Starting Page	1
Ending Page	4
File Size	889053
Page Count	4
File Format	PDF
ISBN	9781467309011
e-ISBN	9781467309042
e-ISBN	9781467309035
DOI	10.1109/IMWS2.2012.6338188
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-09-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Bandpass filter (BPF) Defect Ground Structure (DGS) Microstrip filters Low pass filters Resonator filters Spurline Resonant frequency stub-loaded resonator Band pass filters Filtering theory Microwave filters
Content Type	Text
Resource Type	Article

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