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CAD formula of a microstrip on a grounded substrate of two layers by synthetic asymptote

✍ Scribed by Wanchun Tang; Tingshan Pan; Y. Leonard Chow

Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 202 KB
Volume: 47
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.21237

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✦ Synopsis

Abstract

This paper gives simple CAD formulas of the characteristic impedance and propagation constant for a microstrip on a grounded substrate of two layers by synthetic asymptote. Similar to the one‐layer case, based on the derived formula, the equivalent circuit is a fringe capacitor in parallel with an ideal parallel‐plate capacitor of the two‐layer substrate. The average error is less than 2%. The top layer is assumed thin, at 30% or less of the width W of the microstrip. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 584–588, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21237

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