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Resonant frequency of asymmetrically loaded annular microstrip antenna

✍ Scribed by Madhurika Mahajan; Sunil Kumar Khah; T. Chakarvarty; A. De

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 88 KB
Volume: 50
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.23673

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✦ Synopsis

Abstract

Theory of resonant frequency of an annular ring antenna with asymmetric multiple shorting posts is presented using modified Cavity Model. The posts are thin in diameter with respect to the diameter of ring. For accurate formulation, the shorting posts have been considered as inductive impedances at the frequency of interest. It is shown that for asymmetric loaded ring, TM~11~ is the dominant mode. The simple tool presented can be suitably modified to incorporate switching diodes or varactor diodes. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2351–2353, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23673

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