Accurate computation of wide-band response of electromagnetic systems utilizing narrow-band information

Krishnamoorthy Kottapalli, Tapan Kumar Sarkar, Yingbo Hua, Edmund K. Miller, Gerald J. Burke

Research output: Contribution to journalArticle

88 Citations (Scopus)

Abstract

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 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.

Original languageEnglish (US)
Pages (from-to)682-687
Number of pages6
JournalIEEE Transactions on Microwave Theory and Techniques
Volume39
Issue number4
DOIs
StatePublished - Apr 1991
Externally publishedYes

Fingerprint

narrowband
electromagnetism
broadband
Derivatives
rational functions
Rational functions
Extrapolation
frequency response
Integral equations
Frequency response
interpolation
slits
far fields
integral equations
extrapolation
Interpolation
incidence
Electric fields
impedance
bandwidth

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Accurate computation of wide-band response of electromagnetic systems utilizing narrow-band information. / Kottapalli, Krishnamoorthy; Sarkar, Tapan Kumar; Hua, Yingbo; Miller, Edmund K.; Burke, Gerald J.

In: IEEE Transactions on Microwave Theory and Techniques, Vol. 39, No. 4, 04.1991, p. 682-687.

Research output: Contribution to journalArticle

Kottapalli, Krishnamoorthy ; Sarkar, Tapan Kumar ; Hua, Yingbo ; Miller, Edmund K. ; Burke, Gerald J. / Accurate computation of wide-band response of electromagnetic systems utilizing narrow-band information. In: IEEE Transactions on Microwave Theory and Techniques. 1991 ; Vol. 39, No. 4. pp. 682-687.
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