Application of on-surface MEI method on wire antennas

Author

Liu, Yaowu ; Lan, Kang ; Mei, Kenneth K.

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, Hong Kong

Volume

47

Issue

8

fYear

1999

fDate

8/1/1999 12:00:00 AM

Firstpage

1301

Lastpage

1304

Abstract

The formulas of the on-surface measured equation of invariance (OSMEI) for wire antennas are derived. The unknowns of each node on the antenna surface are expressed by the vector potential function and surface current density. The unknowns in the vicinity of each node are coupled in a linear equation and the coefficients of the linear equation are determined by the measured equation of invariance (MEI) method. The final impedance matrix obtained by the OSMEI is a highly sparse matrix. It demonstrates that the currents on thin wire antennas may also be solved by a differential equation-based formulation in addition to the conventional integral equations

Keywords

current density; difference equations; electric potential; impedance matrix; integral equations; linear antennas; sparse matrices; wire antennas; OSMEI; antenna surface; coefficients; differential equation-based formulation; impedance matrix; integral equations; linear equation; linear wire antennas; on-surface MEI method; on-surface measured equation of invariance; sparse matrix; surface current density; vector potential function; Antenna measurements; Boundary conditions; Current density; Electromagnetic scattering; Integral equations; Linear antenna arrays; Sparse matrices; Surface impedance; Vectors; Wire;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.791947

Filename

791947