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A novel low-pass filter using defected ground structures

✍ Scribed by Xue-Hui Guan; Guo-Hui Li; Zhewang Ma

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
123 KB
Volume
46
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

In this paper, an equivalent‐circuit model of a defected ground structure (DGS) is applied to explain the characteristics of the DGS. The parameters of the circuit model are extracted from the EM‐simulation results. A novel three‐pole lowpass filter is proposed and optimized by using the defected ground structures. It is demonstrated that the filter can provide a sharp rate of attenuation in the stop‐band, as predicted. To further verify this method, the filter with DGS is fabricated on a 30 × 30 mm^2^ substrate. A comparison between the simulation and the measurement confirms the effectiveness of the proposed schemes. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 46: 17–20, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20888

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