Microwave Scattering Characteristics of a Cylindrical Conductor Coated by Dispersive Metamaterials with an Intervening Air Gap

被引：0

作者：

Jamil A.G. ^{[1
]}

Rao T.C.K. ^{[1
]}

机构：

[1] Department of Electrical and Computer Engineering, University of Massachusetts, Lowell, 01826, MA

来源：

Advanced Electromagnetics | 2022年 / 11卷 / 03期

关键词：

Cloaking; Conductor; Metamaterials; Radar cross section; Scattering;

D O I：

10.7716/aem.v11i3.1993

中图分类号：

学科分类号：

摘要：

Plane wave scattering characteristics in the microwave regime (0.1 GHz – 10 GHz), of a conducting cylinder coated by a layer of metamaterial (MTM) having dispersive and lossy constitutive parameters – permittivity (ε) and permeability (μ)-with an intervening air gap is investigated by using the boundary-value technique. The backscattering cross section (BSCS) or the monostatic radar cross section (RCS) has been obtained for both the TM and the TE incident wave polarizations. Analysis based on a mathematical model, namely the Drude-Lorentz dispersion model, for the MTM coating shows that for a certain range of frequencies, the material may behave as either permeability-(or mu-) negative (MNG), permittivity-(or epsilon-) negative (ENG), both-(or double-) negative (DNG) or finally as both-(or double-) positive (DPS). The dispersive and lossy characteristics of these materials combined with the added features of an air gap (which can be practically realized by a layer of Styrofoam) seem to indicate that it is possible to achieve an extremely low radar echo width over a broad range of frequencies, particularly for the DNG type MTM. Further investigations on the total scattering cross section (TSCS) for the DNG type MTM, appear to demonstrate that near perfect broadband cloaking is possible with this geometry. © 2022, Advanced Electromagnetics. All rights reserved.

引用

页码：57 / 63

页数：6

共 18 条

[1]

Plonus M. A., Backscattering from a Conducting Cylinder with a Surrounding Shell, Canadian Journal of Physics, 38, pp. 1665-1676, (1960)

[2]

Rao T. C. K, Hamid M. A. K., Scattering by a multi-layered dielectric-coated conducting cylinder, International Journal of Electronics, 38, pp. 667-673, (1975)

[3]

Wang N., Electromagnetic Scattering from a Dielectric Coated Circular Cylinder, IEEE Transactions on Antennas and Propagation, AP-33, 9, pp. 960-963, (1985)

[4]

Tang C. C. H., Backscattering from Dielectric Coated Infinite Cylindrical Obstacles, Journal of Applied Physics, 28, 5, pp. 628-633, (1957)

[5]

Kodis R. D., Back Scattering at High Frequencies from a Conducting Cylinder with Dielectric Sleeve, IRE Transactions on Antennas and Propagation, 7, 5, pp. 468-470, (1959)

[6]

Valagiannopoulos C. A., Alitalo P., Tretyakov S. A., On the Minimal Scattering Response of PEC Cylinders in a Dielectric Cloak, IEEE Antennas and Wireless Propagation Letters, 13, pp. 403-406, (2014)

[7]

Veselago V. G., The Electrodynamics of Substances with Simultaneously Negative values of ε and µ, Soviet Physics Uspekhi, 10, 4, pp. 509-514, (1968)

[8]

Pendry J. B., Holden A. J., Stewart W. J., Youngs I., Extremely low frequency plasmons in metallic meso structures, Physical Review Letters, 76, pp. 4773-4776, (1996)

[9]

Pendry J. B., Holden A. J., Robbins D. J., Stewart W. J., Magnetism from Conductors and Enhanced Nonlinear Phenomena, IEEE Transactions on Microwave Theory and Techniques, 47, pp. 2075-2084, (1999)

[10]

Smith D.R., Padilla W. J., Vier D.C., Nemat-Nasser S.C., Schultz S., Composite medium with simultaneously negative permeability and permittivity, Physical Review Letters, 84, pp. 4184-4187, (2000)

← 1 2 →