A hybrid SBR/MoM technique for analysis of scattering from small protrusions on a large conducting body

Jian Ming Jin; Feng Ling; Shawn T. Carolan; Jiming M. Song; Walton C. Gibson; Weng Cho Chew; Cai Cheng Lu; Robert Kipp

doi:10.1109/8.719979

A hybrid SBR/MoM technique for analysis of scattering from small protrusions on a large conducting body

Jian Ming Jin, Feng Ling, Shawn T. Carolan, Jiming M. Song, Walton C. Gibson, Weng Cho Chew, Cai Cheng Lu, Robert Kipp

Electrical and Computer Engineering

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

37 Scopus citations

Abstract

A hybrid technique combining the shooting-andbouncing-ray (SBR) method and the method-of-moments (MoM) is presented for analyzing scattering by large conducting bodies having small protrusions. In this technique, the MoM with an approximate Green's function is used to characterize the small protrusions, yielding an admittance matrix, which, when multiplied with the incident field on the protrusions, yields the currents induced on the protrusions. The incident field in the presence of the large bodies is calculated using the SBR method. The field radiated by the currents on the protrusions is also calculated using the SBR method with the aid of reciprocity. Furthermore, an iterative approach is developed, which can reduce the error introduced by the use of the approximate Green's function. Numerical results are given to demonstrate the accuracy and capability of the hybrid technique.

Original language	English
Pages (from-to)	1349-1357
Number of pages	9
Journal	IEEE Transactions on Antennas and Propagation
Volume	46
Issue number	9
DOIs	https://doi.org/10.1109/8.719979
State	Published - 1998

Bibliographical note

Funding Information:
Manuscript received September 30, 1997; revised June 12, 1998. This work was supported by a grant from AFOSR MURI under Contract F49620-96-1-0025, the National Science Foundation under Grant NSF ECE 94-57735, and the Office of Naval Research under Grant N00014-95-1-0848.

Keywords

Electromagnetic scattering
Geometrical theory of diffraction
Moment methods

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/8.719979

Cite this

@article{ec0b921158fa4075a6e9abdd2b1475ee,

title = "A hybrid SBR/MoM technique for analysis of scattering from small protrusions on a large conducting body",

abstract = "A hybrid technique combining the shooting-andbouncing-ray (SBR) method and the method-of-moments (MoM) is presented for analyzing scattering by large conducting bodies having small protrusions. In this technique, the MoM with an approximate Green's function is used to characterize the small protrusions, yielding an admittance matrix, which, when multiplied with the incident field on the protrusions, yields the currents induced on the protrusions. The incident field in the presence of the large bodies is calculated using the SBR method. The field radiated by the currents on the protrusions is also calculated using the SBR method with the aid of reciprocity. Furthermore, an iterative approach is developed, which can reduce the error introduced by the use of the approximate Green's function. Numerical results are given to demonstrate the accuracy and capability of the hybrid technique.",

keywords = "Electromagnetic scattering, Geometrical theory of diffraction, Moment methods",

author = "Jin, {Jian Ming} and Feng Ling and Carolan, {Shawn T.} and Song, {Jiming M.} and Gibson, {Walton C.} and Chew, {Weng Cho} and Lu, {Cai Cheng} and Robert Kipp",

note = "Funding Information: Manuscript received September 30, 1997; revised June 12, 1998. This work was supported by a grant from AFOSR MURI under Contract F49620-96-1-0025, the National Science Foundation under Grant NSF ECE 94-57735, and the Office of Naval Research under Grant N00014-95-1-0848.",

year = "1998",

doi = "10.1109/8.719979",

language = "English",

volume = "46",

pages = "1349--1357",

number = "9",

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TY - JOUR

T1 - A hybrid SBR/MoM technique for analysis of scattering from small protrusions on a large conducting body

AU - Jin, Jian Ming

AU - Ling, Feng

AU - Carolan, Shawn T.

AU - Song, Jiming M.

AU - Gibson, Walton C.

AU - Chew, Weng Cho

AU - Lu, Cai Cheng

AU - Kipp, Robert

N1 - Funding Information: Manuscript received September 30, 1997; revised June 12, 1998. This work was supported by a grant from AFOSR MURI under Contract F49620-96-1-0025, the National Science Foundation under Grant NSF ECE 94-57735, and the Office of Naval Research under Grant N00014-95-1-0848.

PY - 1998

Y1 - 1998

N2 - A hybrid technique combining the shooting-andbouncing-ray (SBR) method and the method-of-moments (MoM) is presented for analyzing scattering by large conducting bodies having small protrusions. In this technique, the MoM with an approximate Green's function is used to characterize the small protrusions, yielding an admittance matrix, which, when multiplied with the incident field on the protrusions, yields the currents induced on the protrusions. The incident field in the presence of the large bodies is calculated using the SBR method. The field radiated by the currents on the protrusions is also calculated using the SBR method with the aid of reciprocity. Furthermore, an iterative approach is developed, which can reduce the error introduced by the use of the approximate Green's function. Numerical results are given to demonstrate the accuracy and capability of the hybrid technique.

AB - A hybrid technique combining the shooting-andbouncing-ray (SBR) method and the method-of-moments (MoM) is presented for analyzing scattering by large conducting bodies having small protrusions. In this technique, the MoM with an approximate Green's function is used to characterize the small protrusions, yielding an admittance matrix, which, when multiplied with the incident field on the protrusions, yields the currents induced on the protrusions. The incident field in the presence of the large bodies is calculated using the SBR method. The field radiated by the currents on the protrusions is also calculated using the SBR method with the aid of reciprocity. Furthermore, an iterative approach is developed, which can reduce the error introduced by the use of the approximate Green's function. Numerical results are given to demonstrate the accuracy and capability of the hybrid technique.

KW - Electromagnetic scattering

KW - Geometrical theory of diffraction

KW - Moment methods

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VL - 46

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EP - 1357

JO - IEEE Transactions on Antennas and Propagation

JF - IEEE Transactions on Antennas and Propagation

IS - 9

ER -

A hybrid SBR/MoM technique for analysis of scattering from small protrusions on a large conducting body

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