Near-resonance decoupling approach (NRDA) for scattering solution of near-resonant structures

Cai Cheng Lu; Weng Cho Chew

doi:10.1109/8.650205

Near-resonance decoupling approach (NRDA) for scattering solution of near-resonant structures

Cai Cheng Lu
, Weng Cho Chew

Electrical and Computer Engineering

Producción científica: Article › revisión exhaustiva

15 Citas (Scopus)

Resumen

The generalized network formulation is applied in combination with the method of moments to calculate the electromagnetic scattering from conducting objects containing near-resonant open-ended cavities. The presence of the cavity increases the iteration number in conjugate gradient iterations due to the near-resonant modes and the multiple wave bounces inside the cavity. The equivalence principle is used to separate the cavity region from the rest of the object, allowing an independent solution of the cavity problem by a direct inversion algorithm using a connection scheme. The solution of the cavity is then represented by a generalized admittance matrix. Numerical results for two-dimensional (2-D) composite targets show that the iteration number can be reduced significantly for objects containing long cavities. This algorithm can also be applied to three-dimensional problems which will be reported in the future.

Idioma original	English
Páginas (desde-hasta)	1857-1862
Número de páginas	6
Publicación	IEEE Transactions on Antennas and Propagation
Volumen	45
N.º	12
DOI	https://doi.org/10.1109/8.650205
Estado	Published - 1997

Nota bibliográfica

Funding Information:
Manuscript received November 11, 1996; revised June 17, 1997. This work was supported by the Air Force Office of Scientific Research under Grant F49620-96-1-0025, the National Science Foundation under Grant NSF ECS93-02145, and the Office of Naval Research under Grant DAAH04-93-G-0430.

Financiación

Manuscript received November 11, 1996; revised June 17, 1997. This work was supported by the Air Force Office of Scientific Research under Grant F49620-96-1-0025, the National Science Foundation under Grant NSF ECS93-02145, and the Office of Naval Research under Grant DAAH04-93-G-0430.

Financiadores	Número del financiador
National Science Foundation (NSF)	NSF ECS93-02145
Office of Naval Research	DAAH04-93-G-0430
Air Force Office of Scientific Research, United States Air Force	F49620-96-1-0025

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/8.650205

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abstract = "The generalized network formulation is applied in combination with the method of moments to calculate the electromagnetic scattering from conducting objects containing near-resonant open-ended cavities. The presence of the cavity increases the iteration number in conjugate gradient iterations due to the near-resonant modes and the multiple wave bounces inside the cavity. The equivalence principle is used to separate the cavity region from the rest of the object, allowing an independent solution of the cavity problem by a direct inversion algorithm using a connection scheme. The solution of the cavity is then represented by a generalized admittance matrix. Numerical results for two-dimensional (2-D) composite targets show that the iteration number can be reduced significantly for objects containing long cavities. This algorithm can also be applied to three-dimensional problems which will be reported in the future.",

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Near-resonance decoupling approach (NRDA) for scattering solution of near-resonant structures

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