Accurate computation of wide-band response of electromagnetic systems utilizing narrow-band information
| Autor: | K. Kottapalli, E.K. Miller, Tapan K. Sarkar, Yingbo Hua, G.J. Burke |
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| Rok vydání: | 1991 |
| Předmět: |
Electromagnetic field
Frequency response Radiation business.industry Mathematical analysis Extrapolation Near and far field Rational function Electric-field integral equation Condensed Matter Physics Electromagnetic radiation Optics Electrical and Electronic Engineering business Interpolation Mathematics |
| Zdroj: | IEEE Transactions on Microwave Theory and Techniques. 39:682-687 |
| ISSN: | 1557-9670 0018-9480 |
| DOI: | 10.1109/22.76432 |
| Popis: | Cauchy's technique for interpolating a rational function from samples of frequency responses and/or their derivatives is investigated. This technique can be used to speed up the numerical computations of parameters, including input impedance and RCS of any linear time-invariant electromagnetic system. This technique is utilized to find the far field of a slit conducting cylinder (TM incidence) over a bandwidth utilizing the information about the current and its derivatives at a few sample points. The numerical results are presented are in good agreement with exact computational data. This technique is a true interpolation/extrapolation technique as it provides the same defective result as the original electric field integral equation at a frequency which corresponds to the internal resonance of the closed structure. > |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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