Applications of GTD to Antenna Problems

Applications of GTD to Antenna Problems

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 o...

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Bibliographic Details
Published in:1976 6th European Microwave Conference pp. 71 - 75
Main Author: pontoppidan, Knud
Format: Conference Proceeding
Language:English
Published: IEEE 01-09-1976
Subjects:
Dipole antennas
Electromagnetic scattering
Geometrical optics
Lighting
Optical reflection
Packaging
Physical theory of diffraction
Ray tracing
Reflector antennas
Satellites
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Summary: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 GTD-solution for a circular symmetric focus-fed 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 side-lobe region. The results expected for more realistic illuminations are discussed.
DOI:10.1109/EUMA.1976.332248