Volume : II, Issue : XI, December - 2012 STUDYOFHIGH DIRECTIVITYIN LOWPERMITTIVITY METAMA TERIALSLABS FOR LEAKY -W A VE MODELSPRASHANTBARIY AR Published By : Laxmi Book Publication Abstract : Investigation has been carried out on the directivity of grounded
low–permittivity metamaterial slab structures that achieve highly directive broadside
radiation. T wo–dimensional (2D) configurations excited by electric line sources are
considered, adopting a scalar plasma–like dispersive permittivity for the metamaterial
medium that suitably models a wire medium in the presence of a 2D electromagnetic
field, with the electric field directed along the wire axes. The role of leaky waves in
producing the high directivity attainable with such structures is illustrated by comparing
it with a simple ray–optic model for the radiation mechanism.
Keywords : Article : Cite This Article : PRASHANTBARIY AR, (2012). STUDYOFHIGH DIRECTIVITYIN LOWPERMITTIVITY METAMA TERIALSLABS FOR LEAKY -W A VE MODELS. Indian Streams Research Journal, Vol. II, Issue. XI, http://oldisrj.lbp.world/UploadedData/1801.pdf References : - K.C. Gaupta, Narrow—beam antennas using an artificial dielectric mediumwith permittivity less than unity . Electron Lett. 7 (1971), 16—18.
- I.J. Bahl and K.C. Gupta. A leaky-wave antenna using an artificial dielectric medium. IEEE Trans Antennas Propag 22 (1974). 119—122.
- G. Poilasne, P . Pouliguen. J. Lenormand, K. Mahdjoubi, C. T erret, and P . Gelin. Theoretical study of interactions between antennas and metallic photonic bandgap materials, MicrowaveOpt T echnol Lett 15 (1997) 384–389
- S. Enoch, G.Tayeb. P Sabouroux. N. Guerin, and P . Vincent. A metamaterial for directive emission. Phys Rev Lett. 89(2002), 213902–1–2139102–4.
- G. Loyal, P . Burghignoli, F . Capolino, D.R. Jackson. and DR. Wilton, Analysis of directive radiation from a line source in a metamaterial slab with low permittivity , IEEE Trans Antennas Propagat 54 (2006), 1117–1030.
- T . T ainir and A.A. Oliner. The influence of complex waves on the radiation held of a slot-excited plasma layer . IRE Trans Antennas Propag 10 (1962). 55–65
- G. Lovat. P . Burghignoli. F . Capolino, and D.R. Jackson. Highly–directive planar leaky—wave antennas: A comparison between metamaterial based and conventional designs. EuMA (European Microwave Association) Proceedings, in press.
- J. Brown Artificial dielectrics having refractive indices less than unity . Proc IEEE 100 (1953). 51–62.
- W. Rotman. Plasma simulation by artificial dielectrics and parallel— plate media. IRE Trans Antennas Propag 10 (1962), 82–95.
- JB. Pendry . A.J. Holden. W .J. Stewart. and I. Y oungs. Extremely low frequency plasmons in metallic mesostructures. Phys Rev Lett. 76 (1996) 4773— 4776.
- J B. Pendry . A.J. Holden, W.J. Robbins, and W.J. Stewart. Low frequency plasmons in thin-wire structures. J Phys: Condens Matter 10 (1998), 4785–4809.
- P .A. Betov. S.A. Tretyakov , and A.J. Viitanen, Dispersion and reflection properties of artificial media formed by regular lattices of ideally conducting wires, J Electromag Waves Appl 16 (2002), 1153–1170.
- P .A. Belov, S.A. Marques. S.I. Maslovski. M. Silveirinha. C.R. Simovski. and S.A. Tretyakov . Strong spatial dispersion in wire media in the very large wavelength limit, Phys Rev B: Solid State 67 (2003). 113103–1–113103–4.
- L.B. Felsen and N. Marcuvitz, Radiation and scattering of waves, IEEE Press. Piscataway . NJ. 1994.
|
Article Post Production
Article Indexed In
|