Electromagnetic scattering by a straight thin wire

The traveling-wave energy, which multiply diffracts on a straight thin wire, is represented as a sum of terms, each with a distinct physical meaning, that can be individually examined in the time domain. Expressions for each scattering mechanism on a straight thin wire are cast in the form of four b...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on antennas and propagation 1989-08, Vol.37 (8), p.1019-1025
Main Authors: Shamansky, H.T., Dominek, A.K., Peters, L.
Format: Article
Language:English
Subjects:
Antenna measurements
Applied sciences
Communications And Radar
Diffraction, scattering, reflection
Electromagnetic diffraction
Electromagnetic reflection
Electromagnetic scattering
Exact sciences and technology
Frequency
Geometry
Moment methods
Propagation losses
Pulse measurements
Radiocommunications
Radiowave propagation
Telecommunications
Telecommunications and information theory
Wire
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The traveling-wave energy, which multiply diffracts on a straight thin wire, is represented as a sum of terms, each with a distinct physical meaning, that can be individually examined in the time domain. Expressions for each scattering mechanism on a straight thin wire are cast in the form of four basic electromagnetic wave concepts: diffraction, attachment, launch, and reflection. Using the basic mechanisms from P.Ya. Ufimtsev (1962), each of the scattering mechanisms is included into the total scattered field for the straight thin wire. Scattering as a function of angle and frequency is then compared to the moment-method solution. These analytic expressions are then extended to a lossy wire with a simple approximate modification using the propagation velocity on the wire as derived from the Sommerfeld wave on a straight lossy wire. Both the perfectly conducting and lossy wire solutions are compared to moment-method results, and excellent agreement is found. As is common with asymptotic solutions, when the electrical length of wire is smaller than 0.2 lambda the results lose accuracy. The expressions modified to approximate the scattering for the lossy thin wire yield excellent agreement even for lossy wires where the wire radius is on the order of skin depth.< >
ISSN:0018-926X
1558-2221
DOI:10.1109/8.34139