Applications of GTD to antenna problems
Abstract
A general computer program package based on the geometrical theory of diffraction (GTD) is presented. The programs are based on a modular approach such that a complex geometry is broken down into smaller and simpler substructures. The applicability of the program package is illustrated by a number of examples ranging from dipole antennas mounted on simple geometrical structures to reflector antenna systems. A GTDsolution for a circular symmetric focusfed reflector antenna is compared to a physical optics solution. It turns out, that with a uniform aperture illumination the two methods give almost identical results in the complete sidelobe region. The results expected for more realistic illuminations are discussed.
 Publication:

6th European Microwave Conference
 Pub Date:
 1976
 Bibcode:
 1976eumw.conf...71P
 Keywords:

 Antenna Design;
 Antenna Radiation Patterns;
 Computer Aided Design;
 Ray Tracing;
 Wave Diffraction;
 Circular Cylinders;
 Computer Programs;
 Dipole Antennas;
 Optics;
 Reflectors;
 Substructures;
 Surface Geometry;
 Wedges;
 Communications and Radar