A Hybrid PO/Generalized-Scattering-Matrix Approach for Estimating the Reflector Induced Mismatch

Author

Giovampaola, Cristian Della ; Martini, Enrica ; Toccafondi, Alberto ; Maci, Stefano

Author_Institution

Dept. of Inf. Eng., Univ. of Siena, Siena, Italy

Volume

60

Issue

9

fYear

2012

Firstpage

4316

Lastpage

4325

Abstract

A generalized network formulation using a spherical wave expansion is applied to the analysis of the perturbation induced at the input port of an antenna by nearby scatterers. The antenna is characterized by using the total scattering matrix; the scattering from the obstacles is studied through a physical optics approach, and the interactions are described in terms of radiated spherical waves. The resulting procedure is simple, has a moderate computational cost and can be directly interfaced with measurements. Results show a very good agreement with full-wave simulations.

Keywords

antennas; electromagnetic wave scattering; perturbation theory; antenna design; computational cost; hybrid PO/generalized-scattering-matrix approach; perturbation analysis; physical optics approach; radiated spherical waves; reflector induced mismatch estimation; scatterers; total scattering matrix; Antenna measurements; Antennas; Indexes; Physical optics; Scattering; Transmission line matrix methods; Antenna feeds; domain decomposition method; generalized scattering matrix; input impedance; physical optics; spherical wave;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2012.2207062

Filename

6231655