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Journal of Radio Electronics Online scientific journal · eISSN 1684-1719
2018, № 3 · ELECTRODYNAMICS

Радиообъектив с частотно-фазовым сканированием на основе волноводно-щелевой решётки вытекающей волны

V.A. Kaloshin1, E.V. Frolova1

1 Kotelnikov IRE RAS, Moscow, Russia
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Abstract

In this paper the results of synthesis and analysis of a two-dimensional array of leaky wave waveguides filled with a dielectric, focused in the Fresnel zone are presented. As radiators, pairwise longitudinal rectangular slots in wide walls of waveguides, shifted by half the wavelength in the waveguide at the central frequency of the band are selected. The problem of determining the position of the slots for focusing the field at a finite distance from the plane of the lattice is solved. Using the finite element method, numerical simulation of the array radiation in the frequency-phase scanning mode is performed. The shape of the focal surface in frequency and phase scanning and the directional characteristics of focused beams in the Fresnel zone are investigated. A comparison with the previously studied array of hollow waveguides is made, the possibility of suppressing the side interference maxima is shown.

  • waveguide filled with a dielectric
  • focusing in the Fresnel zone
  • frequency-phase scanning
Аннотация (на русском)

Радиообъектив с частотно-фазовым сканированием на основе волноводно-щелевой решётки вытекающей волны

Исследованы характеристики частотного и фазового сканирования решетки металлических волноводов, заполненных диэлектриком, с парными продольными щелями, сфокусированной в зоне Френеля. Показана возможность подавления побочных интерференционных максимумов за счет заполнения волноводов диэлектриком.

For citation

Kaloshin V.A., Frolova E.V. Радиообъектив с частотно-фазовым сканированием на основе волноводно-щелевой решётки вытекающей волны // Journal of Radio Electronics. – 2018. – No. 3.

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