Pulsed beam diffraction by a perfectly conducting wedge: exact solution

The new canonical problem of scattering of a collimated pulsed beam (PB) by a perfectly conducting wedge is analyzed and solved exactly. The incident PB is modeled by the so called complex-source PB (CSPB). The authors derive an exact closed-form solution for the scattered field and demonstrate, via...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 1994-10, Vol.42 (10), p.1377-1385
Main Authors: Ianconescu, R., Heyman, E.
Format: Article
Language:English
Subjects:
Analytical models
Apertures
Closed-form solution
Collimators
Dielectrics
Diffraction
Energy exchange
Mathematical model
Pulse generation
Scattering parameters
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Summary:The new canonical problem of scattering of a collimated pulsed beam (PB) by a perfectly conducting wedge is analyzed and solved exactly. The incident PB is modeled by the so called complex-source PB (CSPB). The authors derive an exact closed-form solution for the scattered field and demonstrate, via extensive numerical examples, the local scattering phenomena as a function of the PB parameters (direction, distance from the edge, spatial collimation, and pulse length): if the PB hits near the edge it generates a toroidal diffracted wavepacket that propagates along Keller's cone as well as transitional shadow boundaries effects. These diffraction phenomena diminish as the distance of the impinging wavepacket from the edge grows.< >
ISSN:0018-926X
1558-2221
DOI:10.1109/8.320743