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A novel fractal defected ground structure and its application to the low-pass filter

✍ Scribed by Hai W. Liu; Zheng F. Li; Xiao W. Sun

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
134 KB
Volume
39
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A novel fractal defected ground structure (DGS) for the microstrip line is proposed. The DGS unit lattice is realized by replacing the etched rectangular holes in ground plane with a Sierpinski carpet. The proposed fractal DGS can provide better bandgap, slow‐wave characteristics, and selectivity at cutoff than the conventional dumbbell‐shaped DGS. Furthermore, the fractal DGS is applied effectively to design a low‐pass filter (LPF). A comparison between simulation and measurement confirms the validity of the LPF configuration and design procedure. A simple structure and high‐power handling capability are obtained from the proposed LPF. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 39: 453–456, 2003

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