Low-loss Circularly Polarized Periodic Leaky-Wave Antenna

This letter presents a periodic leaky-wave array antenna with circular polarization at millimeter-wave frequencies. The antenna is designed on the low-loss planar Goubau transmission line to maximize the radiation efficiency of the antenna. The unit cell of the array is formed by four dipoles locate...

ver descrição completa

Detalhes bibliográficos
Autores: Sánchez-Escuderos, Daniel, Ferrando Bataller, Miguel|||0000-0003-3561-5112, Herranz Herruzo, José Ignacio|||0000-0002-0507-1487, Rodrigo Peñarrocha, Vicent Miquel|||0000-0002-8075-4851
Formato: artículo
Fecha de publicación:2016
País:España
Recursos:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/83351
Acesso em linha:https://riunet.upv.es/handle/10251/83351
Access Level:acceso abierto
Palavra-chave:Antenna efficiency
Circularly polarization
Leaky-wave antennas
Millimeter-wave antenna arrays
Antenna measurements
Arrays
Bandwidth
Gain
Leaky wave antennas
Substrates
TEORIA DE LA SEÑAL Y COMUNICACIONES
Descrição
Resumo:This letter presents a periodic leaky-wave array antenna with circular polarization at millimeter-wave frequencies. The antenna is designed on the low-loss planar Goubau transmission line to maximize the radiation efficiency of the antenna. The unit cell of the array is formed by four dipoles located on both faces of the Goubau line s substrate. A prototype has been fabricated and measured. Experimental results show an impedance bandwidth above 15% for S11 < - 10 and a 3-dB axial-ratio bandwidth of 7.6%. The radiation efficiency and maximum gain of the prototype are above 90% and 15.6 dBi, respectively, from 38 to 41 GHz. The maximum gain and the minimum axial ratio present the characteristic steering behavior of leaky-wave antennas.