Titre :

Single-Mode Approximation in the Problem of the Dielectric Leaky Wave Antenna Synthesis
Одномодовое Приближение в Задаче Синтеза Диэлектрической Антенны Вытекающей Волны

Auteur(s) :

Ostankov, A. [Auteur]
Ostankov, S. [Auteur]
Voronezh State University
Litvinov, G. [Auteur]
Dachian, Serguei [Auteur]
Laboratoire Paul Painlevé - UMR 8524 [LPP]
Shchetinin, N. [Auteur]

Titre de la revue :

Bulletin of Voronezh State Technical University

Pagination :

77-85

Date de publication :

2022-08-30

Discipline(s) HAL :

Statistiques [stat]/Applications [stat.AP]

Résumé en anglais : [en]

Electrodynamic modeling of a dielectric leaky wave antenna with a diffraction grating containing a large number of periods with inhomogeneities takes a significant amount of time even in modern commercial electromagnetic ...
Lire la suite >Electrodynamic modeling of a dielectric leaky wave antenna with a diffraction grating containing a large number of periods with inhomogeneities takes a significant amount of time even in modern commercial electromagnetic analysis packages. It is customary to evaluate and optimize the directivity indicators of these antennas on the basis of numerical projection models. Here we consider our projection model obtained by the partial area method and using the description of the field in the grooves of a comb grating in the form of an ensemble of waveguide modes, the number of which determines the accuracy of modeling and the dimension of the final system of linear algebraic equations. There are relations that allow analyzing the main parameters of a dielectric antenna containing a planar dielectric waveguide and a conducting comb grating in the mode of radiation of a vertically polarized radio wave, including the case of a single-mode approximation, in which one waveguide mode is taken into account in the grooves. Using specific examples for different radiation modes, we show the expediency of a single-mode approximation for express analysis and parametric synthesis of a dielectric antenna. We established that the loss of accuracy in assessing the main energy indicators and directivity indicators of the antenna in the oblique radiation mode is acceptable. We found out that in the transition to the single-mode approximation, the optimized index of the dielectric antenna, as a rule, is the most stable in magnitude. WE shown that accounting in one mode grating grooves with a number of grating elements of 30 or more guarantees a gain in time by an order or more. We pointed out that the single-mode approximation for the analysis and synthesis of an antenna in a regime close to Bragg diffraction should be avoided due to the loss of accuracyLire moins >

Langue :

Anglais

Vulgarisation :

Non

Collections :

• Laboratoire Paul Painlevé - UMR 8524

Source :

Harvested from HAL