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Improved performance of stepped impedance resonator low-pass filter by using defect ground structure

✍ Scribed by Min-Hung Weng; Chi-Hsiang Pan; Chih-Wei Shao; Hung-Wei Wu

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
118 KB
Volume
43
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A stepped impedance resonator (SIR) low‐pass filter using defect ground structure (DGS), which has high isolation and compact size, is proposed. The proposed defect ground structure (DGS) provides excellent cutoff and stopband characteristics for improving the stopband rejection and the attenuation rate of the bandpass edge. In order to illustrate the improved performance, we compare the conventional low‐pass filter and the proposed novel low‐pass filter with DGS. The measurement results of the fabricated low‐pass filter show excellent agreement with the theoretical results. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 43: 382–384, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20477

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