Journal of Radio Electronics. eISSN 1684-1719. 2025. №5

Full text in Russian (pdf)

DOI: https://doi.org/10.30898/1684-1719.2025.5.3

ANTENNA BASED ON A SPHERICAL ANISOTROPIC LUNEBURG LENS
MADE OF PERFORATED DIELECTRIC

Bui Van Chung¹, V.A. Kaloshin²

¹Moscow Institute of Physics and Technology
(National Research University),
141700, Russia, Moscow region, Dolgoprudny, Institutsky per., 9

²Kotelnikov Institute of Radio Engineering and Electronics of RAS,
125007 Russia, Moscow, Mokhovaya str., 11, building 7

The paper was received 5 May 2025.

Abstract. Using numerical modeling and the Kirchhoff approximation, the influence of the anisotropy of the average permittivity of a perforated structure in the form of a hexagonal array of round holes in a solid dielectric on the radiation characteristics of an antenna based on a spherical perforated Luneburg lens was studied for two variants of the linear polarization of the feed. It was shown that when the feeds are located in a plane orthogonal to the holes and the polarization of their electric field is orthogonal to the holes, the anisotropy does not affect the radiation characteristics of the lens antenna. With a different polarization or a different arrangement of feeds, the anisotropy limits the maximum value of the electrical diameter of the lens at a given level of the surface utilization factor. An estimate of such a limitation is given for the location of the feeds of the feeds in the plane orthogonal to the holes.

Keywords: antenna, Luneburg lens, perforated dielectric, anisotropy.

Financing: The work was carried out using budgetary funding within the framework of a state task.

Corresponding author: Kaloshin V.A. vak@cplire.ru

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For citation:

Bui Van Chung, Kaloshin V.A. Antenna based on a spherical anisotropic Luneburg lens made of perforated dielectric. // Journal of Radio Electronics. – 2025. – №. 5. https://doi.org/10.30898/1684-1719.2025.5.3 (In Russian)