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Fractal-shaped microstrip dual-mode bandpass filter with asymmetrical sinuous spurlines

✍ Scribed by Fu Tong; Haiwen Liu

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
143 KB
Volume
51
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

In this article, miniaturized dual‐mode bandpass filters using Koch fractal‐shaped slots and sinuous spurlines are proposed. Because of the space‐filling property of the fractal geometry, the transmission characteristics of this filter can be adjusted by the iteration order of the Koch fractal curve. Moreover, asymmetrical sinuous spurlines are adopted to tune the degenerate modes. Compared with the conventional square‐patch filters, fractal slots and sinuous spurlines can also provide more current distribution distortions which improve the electrical length and realize a compact design. Experimental data in agreement with theoretical data verify the design methodology. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 745–747, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24167

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