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IEEE Transactions on Antennas and Propagation
Volume 48 Number 5, May 2000

Rigorous Evaluation of the Vertex Effects on the Frequency-Dependent Circuit Parameters of an Open-Ended Microstrip Line

Page 817.

Abstract:

This study presents the original inclusion of right singular vertex conditions in integral equations solved by the method of moments for accurate evaluation of frequency-dependent microstrip discontinuity models required in microwave integrated circuits (MIC) and monolithic microwave integrated circuits (MMIC) design. The 90° wedges singularity function for the current density, weighted with a novel sampling function for"corner cells,"and the harmonic Green's function for shielded structures, is accurately and efficiently integrated in the conical geometry of the 90° sector. The frequency-dependent effective length and excess equivalent capacitance of a shielded open-ended microstrip line are calculated to a higher accuracy with respect to previous two-dimensional and three-dimensional"full wave analyses."

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