Frequency-Domain and Time-Domain Novel Uniform Asymptotic Solutions for Scattered Fields by an Impedance Cylinder and a Dielectric Cylinder(Electromagnetic Theory)
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概要
- 論文の詳細を見る
Frequency-domain and time-domain novel uniform asymptotic solutions for the scattered fields by an impedance cylinder and a dielectric cylinder, with a radius of curvature sufficiently larger than the wavelength, are presented in this paper. The frequency-domain novel extended UTD and the modified UTD solutions, derived by retaining the higher-order terms in the integrals for the scattered fields, may be applied in the deep shadow region in which the conventional UTD solutions produce the substantial errors. The novel time-domain uniform asymptotic solutions are derived by applying the saddle point technique in evaluating the inverse Fourier transform. We have confirmed the accuracy and validity of the uniform asymptotic solutions both in the frequency-domain and in the time-domain by comparing those solutions with the reference solutions calculated from the eigenfunction expansion (frequency-domain) and from the hybrid eigenfunction expansion and fast Fourier transform (FFT) method (time-domain).
- 社団法人電子情報通信学会の論文
- 2005-11-01
著者
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Goto Keiji
Dep. Of Communication Engineering National Defense Acad.
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Goto Keiji
Department Of Communication Engineering National Defense Academy
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Goto Keiji
Department Of Anesthesiology And Resuscitology Okayama University Graduate School Of Medicine Dentis
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IDA Teruhiko
Department of Communications Engineering, National Defense Academy
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ISHIHARA Toyohiko
Department of Communication Engineering National Defense Academy
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Ida Teruhiko
Department Of Communication Engineering National Defense Academy
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