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

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

doi:10.1109/22.76432

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

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

Department of Electrical Engineering & Computer Science

Research output: Contribution to journal › Article › peer-review

93 Scopus citations

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 language	English (US)
Pages (from-to)	682-687
Number of pages	6
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	39
Issue number	4
DOIs	https://doi.org/10.1109/22.76432
State	Published - 1991

ASJC Scopus subject areas

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1109/22.76432

Cite this

@article{594fd346e0714ecca9c891eda05025d2,

title = "Accurate computation of wide-band response of electromagnetic systems utilizing narrow-band information",

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.",

author = "Krishnamoorthy Kottapalli and Sarkar, {Tapan K.} and Yingbo Hua and Miller, {Edmund K.} and Burke, {Gerald J.}",

year = "1991",

doi = "10.1109/22.76432",

language = "English (US)",

volume = "39",

pages = "682--687",

journal = "IEEE Transactions on Microwave Theory and Techniques",

issn = "0018-9480",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "4",

}

TY - JOUR

T1 - Accurate computation of wide-band response of electromagnetic systems utilizing narrow-band information

AU - Kottapalli, Krishnamoorthy

AU - Sarkar, Tapan K.

AU - Hua, Yingbo

AU - Miller, Edmund K.

AU - Burke, Gerald J.

PY - 1991

Y1 - 1991

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0026141259&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026141259&partnerID=8YFLogxK

U2 - 10.1109/22.76432

DO - 10.1109/22.76432

M3 - Article

AN - SCOPUS:0026141259

SN - 0018-9480

VL - 39

SP - 682

EP - 687

JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

IS - 4

ER -

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

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this