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CAD formula of a microstrip on a grounded substrate of two layers by synthetic asymptote
Author(s) -
Tang Wanchun,
Pan Tingshan,
Chow Y. Leonard
Publication year - 2005
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.21237
Subject(s) - asymptote , microstrip , substrate (aquarium) , capacitor , microwave , layer (electronics) , electrical impedance , materials science , equivalent circuit , electronic engineering , engineering , electrical engineering , optoelectronics , mathematics , composite material , telecommunications , geometry , oceanography , voltage , geology
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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