RCS OF LARGE BENT WAVEGUIDE DUCTS FROM A MODAL ANALYSIS COMBINED WITH THE KIRCHHOFF APPROXIMATION

被引：8

作者：

Bourlier, C. ^{[1
]}

He, H. ^{[1
]}

Chauveau, J. ^{[1
]}

Hemon, R. ^{[2
]}

Pouliguen, P. ^{[2
]}

机构：

[1] Polytech Nantes, Lab IREENA, F-44306 Nantes 3, France

[2] CELAR, DGA, DET, F-35170 Bruz, France

来源：

PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER | 2008年 / 88卷

关键词：

D O I：

10.2528/PIER08101708

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 [电气工程]; 0809 [电子科学与技术];

摘要：

In this paper, we present a fast method to predict the monostatic Radar Cross Section (RCS) in high-frequency of a cavity, which can be modeled as a succession of bent waveguides of the same cross section and studied by a perfectly-conducting termination. Based on a modal analysis combined with the Kirchho. Approximation, this method allows us to obtain closed-form expressions of the transmission matrix at each discontinuity. In addition, to improve the efficiency, a selective modal scheme is proposed, which selects only the propagating modes contributing to the scattering. Compared to the Iterated Physical Optics (IPO) method and the Multi-Level Fast Multipole Method (MLFMM, generated from the commercial software FEKO), this approach brings good results for cavities with small tilt angles of the bends, typically smaller than 2 degrees.

引用

页码：1 / 38

页数：38

共 24 条

[1]

A SELECTIVE MODAL SCHEME FOR THE ANALYSIS OF EM COUPLING INTO OR RADIATION FROM LARGE OPEN-ENDED WAVE-GUIDES [J].

ALTINTAS, A ;

PATHAK, PH ;

LIANG, MC .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1988, 36 (01) :84-96

[2]

The mode matching technique for electromagnetic scattering by cylindrical waveguides with canonical terminations [J].

Anastassiu, HT ;

Volakis, JL ;

Ross, DC .

JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS, 1995, 9 (11-12) :1363-1391

[3]

A review of electromagnetic scattering analysis for inlets, cavities, and open ducts [J].

Anastassiu, HT .

IEEE ANTENNAS AND PROPAGATION MAGAZINE, 2003, 45 (06) :27-40

[4]

Analysis of transmission of a signal through a complex cylindrical/coaxial cavity by transmission line methods [J].

Bopp, C. L., III ;

Butler, C. M. .

PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER, 2006, 56 :33-51

[5]

2 RAY SHOOTING METHODS FOR COMPUTING THE EM SCATTERING BY LARGE OPEN-ENDED CAVITIES [J].

BURKHOLDER, RJ ;

CHOU, RC ;

PATHAK, PH .

COMPUTER PHYSICS COMMUNICATIONS, 1991, 68 (1-3) :353-365

[6]

Chan JKC, 2002, AM J CLIN PATHOL, V117, P16

[7]

Collin RE., 1991, FIELD THEORY GUIDED

[8]

*EM SOFTW SYST, 2003, FEKO US MAN SUIT 4 1

[9]

Computation of EM field scattered by an open-ended cavity and by a cavity under radome using the iterative physical optics [J].

Hemon, R. ;

Pouliguen, P. ;

He, H. ;

Saillard, J. ;

Damiens, J.F. .

Progress in Electromagnetics Research, 2008, 80 :77-105

[10]

Ishimaru A., 1991, Electromagnetic wave propagation, radiation, and scattering

← 1 2 3 →