Zeroth-Order Complete Discretizations of Integral-Equation Formulations Involving Conducting or Dielectric Objects at Very Low Frequencies

Author

Ubeda, E. ; Tamayo, J.M. ; Rius, J.M. ; Heldring, A.

Author_Institution

Signal Theor. & Commun. Dept., Univ. Politec. de Catalunya, Barcelona, Spain

Volume

59

Issue

7

fYear

2011

fDate

7/1/2011 12:00:00 AM

Firstpage

2735

Lastpage

2741

Abstract

We present the Self-Loop basis functions, a divergence-conforming set with zero charge density. These basis functions allow a rearrangement of the Linear-linear basis functions set to overcome the low-frequency breakdown. We show the accuracy and stability at very low frequencies of the Linear-linear discretizations of (i) electric-field integral equation for perfectly conducting objects and (ii) the Poggio-Miller-Chang-Harrington-Wu-Tsai formulation, for dielectric bodies.

Keywords

dielectric materials; electric fields; electromagnetic wave propagation; electromagnetic wave scattering; integral equations; method of moments; radar cross-sections; Poggio-Miller-Chang-Harrington-Wu-Tsai formulation; dielectric objects; divergence conforming; electric field integral equation; electromagnetic scattering; integral equation formulations; linear-linear basis functions; linear-linear discretizations; method of moments; perfectly conducting objects; radar cross section; self loop basis function; very low frequencies; zero charge density; zeroth order complete discretization; Accuracy; Dielectrics; Electric breakdown; Impedance; Integral equations; Moment methods; Surface impedance; Electromagnetic scattering; integral equations; method of moments (MoM); numerical analysis; radar cross section (RCS);

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2011.2152316

Filename

5765475