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An efficient and accurate model of the coax cable feeding structure for FEM simulationsAn efficient and accurate coax cable feed model is proposed for microstrip or cavity-backed patch antennas in the context of a hybrid finite element method (FEM). A TEM mode at the cavity-cable junction is assumed for the FEM truncation and system excitation. Of importance in this implementation is that the cavity unknowns are related to the model fields by enforcing an equipotential condition rather than field continuity. This scheme proved quite accurate and may be applied to other decomposed systems as a connectivity constraint. Comparisons of our predictions with input impedance measurements are presented and demonstrate the substantially improved accuracy of the proposed model.
Document ID
19950013383
Document Type
Other
Authors
Gong, Jian (Michigan Univ. Ann Arbor, MI, United States)
Volakis, John L. (Michigan Univ. Ann Arbor, MI, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1995
Publication Information
Publication: Simulation of Thin Slot Spirals and Dual Circular Patch Antennas Using the Finite Element Method with Mixed Elements
Subject Category
COMMUNICATIONS AND RADAR
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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