Title :
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
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;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1219216
