Estimation of high frequency scattered microwave electric field using the extended Born approximation [microwave imaging applications]

Author

Yang Yang ; Basir, O.A. ; Yaxun Liu

Author_Institution

Dept. of Syst. Design, Waterloo Univ., Ont., Canada

Volume

2

fYear

2003

fDate

22-27 June 2003

Firstpage

215

Abstract

In this paper, we investigate and evaluate the performance of the extended Born approximation in a high frequency band, up to 18 GHz. We reformulate the EBA in terms of the dielectric constant. The scattered electric fields using the EBA are compared with the exact model. We demonstrate a guideline for choosing the grid size and discuss the dependence of the accuracy of EBA on size and permittivity of the anomaly. In addition, the EBA model is applied to the two anomalies case. In our work, the dielectric perturbation instead of conductivity perturbation is emphasized.

Keywords

electromagnetic wave scattering; microwave imaging; permittivity; perturbation techniques; 18 GHz; EBA; anomaly permittivity; conductivity perturbation; dielectric constant; dielectric perturbation; extended Born approximation; high frequency scattered microwave electric field; microwave imaging; Approximation methods; Frequency estimation; Green´s function methods; Integral equations; Matrices; Message-oriented middleware; Nonuniform electric fields; Permittivity; Scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2003. IEEE

Conference_Location

Columbus, OH, USA

Print_ISBN

0-7803-7846-6

Type

conf

DOI

10.1109/APS.2003.1219216

Filename

1219216