Long wave layer-specific representation of the optical properties of slab metamaterials

Rybin, Oleg; Raza, Muhammad Qamar

doi:10.3233/jae-2010-1075

Cited by 6 publications

(5 citation statements)

References 19 publications

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“…Long-wave approximation of infinite chain of cylinders has been deeply explored in our previous work [11][12][13]. This work is the extension of our previous research.…”

Section: Introductionmentioning

confidence: 95%

Theoretical evaluation of left-handed material parameters with cylindrical inclusions

Raza

2015

Can. J. Phys.

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We studied the electric and magnetic responses from the infinite chain of circular metallic cylinders periodically engrossed in a dielectric matrix (wax). The study used the effective medium theory developed for the long-wavelength approximations of complex effective constants. The analytical results show that the presented metamaterial exhibits the phenomenon with negative effective parameters. Moreover, increase in volume fraction increases the negativity of the effective parameters. With an increase in gigahertz (GHz) frequencies, the effective dielectric constant approaches zero, and a minor increase in the negativity of the effective magnetic constant is observed. PACS Nos.: 41.20.-q, 41.20.Jb.Résumé : Nous étudions les réponses électrique et magnétique d'une chaine infinie de cylindres métalliques circulaires périodiquement plongées dans une matrice de diélectrique (cire). Nous utilisons la théorie des milieux effectifs développée dans l'approximation aux grandes longueurs d'onde des constantes effectives complexes. Les résultats analytiques indiquent que le présent métamatériau montre des paramètres effectifs négatifs. De plus, une augmentation en fraction volumique augmente la négativité des paramètres effectifs. Par contre, dans une augmentation des fréquences dans les GHz, les constantes diélectriques efficaces tendent vers zéro et nous observons une légère augmentation des constances magnétiques. [Traduit par la Rédaction]

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“…Long-wave approximation of infinite chain of cylinders has been deeply explored in our previous work [11][12][13]. This work is the extension of our previous research.…”

Section: Introductionmentioning

confidence: 95%

Theoretical evaluation of left-handed material parameters with cylindrical inclusions

Raza

2015

Can. J. Phys.

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“…The method to retrieve negative permeability with metallic inclusions was explained by Rybin [18][19][20]. A new concept of Sierpinski carpet slot in a metamaterial transmission line is introduced by Xu et al [21].…”

Section: Introductionmentioning

confidence: 99%

Directivity enhancement of miniaturized microstrip patch antenna using metamaterial cover

Dwivedi

Mishra

Kosta

2015

International Journal of Applied Electromagnetics and Mechanics

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The variation in the spacing height of a metamaterial cover over the slotted patch antenna is reported to improve its directivity. HFSS software is used for simulations. An antenna is designed with a metamaterial cover to work in three bands within the frequency range of 1-4 GHz. A comparative result analysis of the effect of varying the spatial height of the metamaterial cover over patch antenna is shown theoretically. The proposed novel slotted patch antenna design has triband operation in the frequency range of 1-4 GHz with the miniaturized overall antenna size of the dimension 52.5 mm × 36.5 mm × 1.56 mm, that is equivalent to miniaturized design reported to our knowledge so far. For the very first time, the concept of Newton's divided difference method is applied for evaluating the performance parameters of the antenna. A global formula is developed to indicate the relationship of the directivity with the spatial height. The designed model has various applications in the field of satellite, aeronautical and optical communications mainly in the frequency range of L and S band.

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“…As a special structure with negative magnetic permeability or negative permittivity, the metamaterial have some special effects on antenna performance [5][6][7][8]. So more and more microstrip antennas based on metamaterials were studied [9][10][11][12][13][14]. However, different structural metamaterials have different effections on improving the antenna gain.…”

Section: Introductionmentioning

confidence: 99%

Analysis and realization of improving the patch antenna gain based on metamaterials

Yang

Sun

Zuo

et al. 2014

International Journal of Applied Electromagnetics and Mechanics

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To improve the gain of microstrip antenna, it can be realized by artificially introducing metamaterials into microstrip antenna. This paper introduces four kinds of metamaterial structures, such as dendritic-type, cross-type, s-type and h-type. All can improve the antenna performance in varying degrees. Based on the analysis and comparison of the simulated results, we found that the dendritic-type metamaterial microstrip antenna has the most remarkable influence on increasing of the antenna gain with the bandwidth basically unchanged. At last, the simulated results were compared with the measured results. The good agreements can be observed.

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Long wave layer-specific representation of the optical properties of slab metamaterials

Cited by 6 publications

References 19 publications

Theoretical evaluation of left-handed material parameters with cylindrical inclusions

Theoretical evaluation of left-handed material parameters with cylindrical inclusions

Directivity enhancement of miniaturized microstrip patch antenna using metamaterial cover

Analysis and realization of improving the patch antenna gain based on metamaterials

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