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Fractal-shaped stepped-impedance transformers for wideband application

✍ Scribed by Wen-Ling Chen; Guang-Ming Wang; Yi-Na Qi; Jian-Gang Liang

Book ID
102516760
Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
190 KB
Volume
49
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

Microstrip stepped‐impedance transformers using a Sierpinski fractal shape are proposed for the first time. The proposed fractal‐shaped stepped‐impedance transformers can greatly enhance the operating frequency bandwidth. Bandwidth up to 44.0% and 73.9% (S~11~≤−30 dB) have been achieved by the presented two‐section and three‐section fractal‐shaped maximal flat stepped‐impedance transformers, respectively. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1628–1630, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22557

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