On the accuracy of the UTD for the scattering by a cylinder

On the accuracy of the UTD for the scattering by a cylinder

The UTD formulation for the scattering by a cylinder is valid for antennas that are removed from the cylinder surface. The usual guideline is that reliable results can be obtained for antennas that are about /spl lambda//4 or more away from the surface. By exploring a few cases, we show that /spl la...

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Veröffentlicht in:IEEE transactions on antennas and propagation 1994-05, Vol.42 (5), p.757-760
1. Verfasser: Paknys, R.
Format: Artikel
Sprache:eng
Schlagworte:
Aerospace engineering
Antennas
Applied sciences
Councils
Electromagnetic analysis
Electromagnetic scattering
Engine cylinders
Exact sciences and technology
Geometry
Guidelines
Physical theory of diffraction
Radiocommunications
Receiving antennas
Telecommunications
Telecommunications and information theory
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Beschreibung
Zusammenfassung:The UTD formulation for the scattering by a cylinder is valid for antennas that are removed from the cylinder surface. The usual guideline is that reliable results can be obtained for antennas that are about /spl lambda//4 or more away from the surface. By exploring a few cases, we show that /spl lambda//4 is unnecessarily large for the lit region and sometimes too small for the shadow region. In addition, we find that with a simple heuristic modification to the UTD, heights as small as /spl lambda//20 can be accommodated, with an accuracy that is sufficient for most engineering applications.< >
ISSN:0018-926X
1558-2221
DOI:10.1109/8.299580