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Microstrip stepped-impedance hairpin resonator low-pass filter with defected ground structure

✍ Scribed by Ju-Hyun Cho; Jong-Chul Lee

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
166 KB
Volume
48
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

In this paper, a new microstrip stepped‐impedance hairpin resonator (SIR) low‐pass filter (LPF) using a defected ground structure (DGS) is proposed. The proposed SIR hairpin low‐pass filter using DGS provides a very sharp cutoff frequency response with low insertion loss. Furthermore, the SIR hairpin low‐pass filter can provide attenuation poles for the wide‐stopband characteristic due to the resonance characteristic of the DGS. Design parameters for the SIR low‐pass filter are derived based on stepped‐impedance theory and the equivalent‐circuit model for the DGS. The experimental results show excellent agreement with the theoretical simulation results. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 405–408, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21364

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