Efficient Techniques for Near-Field Computation and Subreflector Analysis

This thesis is divided into three main parts. In the first part a new technique for near-field computation is proposed. Integral representations of the radiating near field are obtained by making Fresnel approximations in the phase, magnitude and direction of the exact field expression. The analysis is general in the sense that neither the vectorial nature of the field nor the curvature of the antenna surface is neglected. Alternatively, the radiating near field is expressed via the Sommerfeld-Wilcox expansion. For field computation, the series method of the modified Jacobi polynomials is employed. Advantages of this method over other existing methods are shown, and details for implementing the method for both planar aperture and reflector antennas are given.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Electrical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Rushdi, Ali Muhammad Ali

• Engineering, Electronics and Electrical

Language dc:language

eng

Identifier

(UMI)AAI8026583

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/66235