Approximating the surface impedance of a homogeneous lossy half-space: An example of "dialable" accuracy

Document Type

Article

Publication Date

7-1-2002

Abstract

We present an approximation by exponentials of the time-domain surface impedance of a lossy half space. Gauss-Chebyshev quadrature of order N - 1 is employed to approximate an integral representation of the modified Bessel functions comprising the time-domain impedance kernel. An explicit error estimate is obtained in terms of the physical parameters, the computation time, and the number of quadrature points N. We show our approximation as accurate as other approaches, which do not come with such an error estimate. The conditions under which the error estimate derived herein, also applies to the approximation in [5] are investigated.

Identifier

0036630691 (Scopus)

Publication Title

IEEE Transactions on Antennas and Propagation

External Full Text Location

https://doi.org/10.1109/TAP.2002.800703

ISSN

0018926X

First Page

941

Last Page

943

Issue

7

Volume

50

Grant

F49620-99-1-0072

Fund Ref

Air Force Office of Scientific Research

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