Estudio de estructuras radiantes planas en tecnología impresa para la obtención de antenas con polarización circular a la frecuencia de operación de 1,5 GHz.

Abstract

The study of five flat radiating structures in printed technology is proposed to obtain circular polarization, which are composed of two radiating elements with linear polarization arranged orthogonally and controlled phase difference between their feeds. It includes the design, modeling and simulation of structures on a substrate with low relative permittivity (FR-4) for telemetry applications that operate in the L band at a frequency of 1.5 GHz. Modeling and electromagnetic simulation of structures is carried out in the CST Studio Suite software. The antennas studied are dipole, BowTie, slot, Dog Bone and patch. The coupling of the radiating structures was performed for characteristic impedances of 50 Ω, 75 Ω and 200 Ω.

The results of the simulations of each of the radiating structures are analyzed by studying the reflection coefficient (coupling, S11) and the analysis of the radiation patterns in terms of co-polarization and cross-polarization.