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A finite element-boundary integral method for cavities in a circular cylinderConformal antenna arrays offer many cost and weight advantages over conventional antenna systems. However, due to a lack of rigorous mathematical models for conformal antenna arrays, antenna designers resort to measurement and planar antenna concepts for designing non-planar conformal antennas. Recently, we have found the finite element-boundary integral method to be very successful in modeling large planar arrays of arbitrary composition in a metallic plane. We extend this formulation to conformal arrays on large metallic cylinders. In this report, we develop the mathematical formulation. In particular, we discuss the shape functions, the resulting finite elements and the boundary integral equations, and the solution of the conformal finite element-boundary integral system. Some validation results are presented and we further show how this formulation can be applied with minimal computational and memory resources.
Document ID
19930006526
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Kempel, Leo C.
(Michigan Univ. Ann Arbor, MI, United States)
Volakis, John L.
(Michigan Univ. Ann Arbor, MI, United States)
Date Acquired
September 6, 2013
Publication Date
December 22, 1992
Subject Category
Communications And Radar
Report/Patent Number
UMICH-028918-3-T
NASA-CR-191381
NAS 1.26:191381
Accession Number
93N15715
Funding Number(s)
CONTRACT_GRANT: NCA2-653
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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