On microstrip capacitance and impedance

The accuracy of various mathematical models for the prediction of the capacitance and characteristic impedance of a single-conductor microstrip is investigated. Comparison between experimental and modeled results indicates that purely empirical models are sometimes the most accurate over a limited r...

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Bibliographic Details
Published in:	IEEE transactions on components, hybrids, and manufacturing technology hybrids, and manufacturing technology, 1990-12, Vol.13 (4), p.1121-1123
Main Authors:	Young, F.J., Murphy, A.T.
Format:	Article
Language:	eng
Subjects:	Applied sciences Boundary element methods Capacitance Circuit properties Conductors Dielectrics Distributed parameter circuits Electric, optical and optoelectronic circuits Electronics Exact sciences and technology Impedance Mathematical model Microstrip Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits Permittivity Transmission line theory
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Summary:	The accuracy of various mathematical models for the prediction of the capacitance and characteristic impedance of a single-conductor microstrip is investigated. Comparison between experimental and modeled results indicates that purely empirical models are sometimes the most accurate over a limited range of parameters. When various mathematical models are compared to calculations done by the boundary-element method, Wheeler's formulas (1977) are found to be very accurate. Various other mathematical models are studied and the source of discrepancies between experimental results and exact mathematical models is discussed.< >
ISSN:	0148-6411 1558-3082