Accurate computation of wideband response of electromagnetic systems utilizing narrowband information

K. Kottapalli, Tapan Kumar Sarkar, R. Adve, Y. Hua, E. K. Miller, G. J. Burke

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The concept of analytical continuation is utilized to generate the electromagnetic response over a wide frequency band. The problem of interest is TM scattering from a conducting cylinder. A method of moment formulation is utilized to generate information about the current and its derivatives at a set of specific frequencies. This information is utilized to extrapolate the current at other frequencies. The numerical results presented are in good agreement with exact data. Two techniques, namely frequency derivative and Cauchy's technique have been introduced for extrapolating and interpolating a rational function, respectively, from a few samples of frequency responses and their derivatives. This technique can be used to speed up the numerical computations of parameters like input impedance and RCS of any linear time-invariant system.

Original languageEnglish (US)
Pages (from-to)126-144
Number of pages19
JournalComputer Physics Communications
Volume68
Issue number1-3
DOIs
StatePublished - 1991

Fingerprint

narrowband
electromagnetism
broadband
Derivatives
Rational functions
Method of moments
rational functions
Frequency bands
Frequency response
method of moments
Scattering
frequency response
impedance
formulations
conduction
scattering

ASJC Scopus subject areas

  • Computer Science Applications
  • Physics and Astronomy(all)

Cite this

Accurate computation of wideband response of electromagnetic systems utilizing narrowband information. / Kottapalli, K.; Sarkar, Tapan Kumar; Adve, R.; Hua, Y.; Miller, E. K.; Burke, G. J.

In: Computer Physics Communications, Vol. 68, No. 1-3, 1991, p. 126-144.

Research output: Contribution to journalArticle

Kottapalli, K. ; Sarkar, Tapan Kumar ; Adve, R. ; Hua, Y. ; Miller, E. K. ; Burke, G. J. / Accurate computation of wideband response of electromagnetic systems utilizing narrowband information. In: Computer Physics Communications. 1991 ; Vol. 68, No. 1-3. pp. 126-144.
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