ANTENA REPETIDORA CON PLANO DE TIERRA AMC PARA APLICACIONES EN WI-FI HALLOW (REPEATING ANTENNA WITH AMC GROUND PLANE FOR WI-FI HALLOW APPLICATIONS)

Sergio Buenrostro Rocha, Roberto Herrera Charles, Andrés Calvillo Téllez

Resumen


Resumen
En este artículo se propone el diseño teórico de una antena basada en metamaterial de alta ganancia, alta eficiencia y de bajo perfil. La antena opera en el rango de frecuencias UHF de 854 MHz - 954 MHz y puede ser implementada como un repetidor para el estándar de comunicación inalámbrica Wi-Fi HaLow (IEEE 802.11 ah), la cual opera en la banda libre de 900 MHz. La ganancia de la antena va desde los 5 dBi hasta los 9 dBi, con por lo menos 94 % de eficiencia de radiación y un 11 % de ancho de banda fraccional. El tamaño de esta estructura de bajo perfil es de 308 mm x 308 mm x 20.29 mm (0.92 λ0 x 0.92 λ0 x 0.06 λ0). La estructura consta de una antena dipolo acoplada a 50 Ω que es colocada sobre un plano de tierra de Conductor Magnético Artificial (AMC) con un arreglo de 4 x 4 celdas unitarias cuadradas. Esta antena también puede utilizarse como complemento al Internet de las cosas (IoT), cámaras de video y a las redes inalámbricas de sensores (WSN). Se presenta la metodología de diseño, y se reportan los resultados del análisis electromagnético.
Palabras Clave: Antena; Conductor Magnético Artificial (AMC), longitud de onda en el espacio libre (λ0), metamaterial, Wi-Fi HaLow.

Abstract
A metamaterial-based antenna with high-gain, high-efficiency, low-profile and improved bandwidth is theorically proposed and analyzed in this paper. The antenna operates in the 854 MHz - 954 MHz UHF frequency range and can be implemented as a repeater for the HaLow Wi-Fi wireless communication standard (IEEE 802.11ah), which operates in the 900 MHz free band. Antenna gain ranges from 5 dBi to 9 dBi, with at least 94% radiation efficiency and 11 % fractional bandwidth. The size of this low-profile structure is 308mm x 308mm x 20.29mm (0.92 λ0 x 0.92 λ0 x 0.06 λ0). The structure consists of a 50 Ω dipole antenna which is placed over an Artificial Magnetic Conductor (AMC) ground plane with an array of 4 x 4 squared shaped unit cells. This antenna can also be used as a complement to the Internet of Things (IoT), video cameras and Wireless Sensor Networks (WSN). The design methodology of the antenna is presented, and the results of the electromagnetic analysis are reported.
Keywords: Antena, Artificial Magnetic Conductor (AMC), free space wavelength (λ0), metamaterial, Wi-Fi HaLow.

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Referencias


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