Low-sidelobe-level millimeter-wave asymmetric bull's eye antenna with minimal profile feeding
Fecha
2024Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión aceptada / Onetsi den bertsioa
Identificador del proyecto
Impacto
|
10.1109/LAWP.2023.3321411
Resumen
Bull’s eye antennas exhibit remarkable directivity
considering their low profile, albeit accompanied by high sidelobes.
This undesirable radiation characteristic is tackled here by reporting a complementary split ring feeding whereby the broadside
space-wave partially responsible for the high sidelobes is cancelled
while the leaky wave is excited effectively. This feeding results in an
asymm ...
[++]
Bull’s eye antennas exhibit remarkable directivity
considering their low profile, albeit accompanied by high sidelobes.
This undesirable radiation characteristic is tackled here by reporting a complementary split ring feeding whereby the broadside
space-wave partially responsible for the high sidelobes is cancelled
while the leaky wave is excited effectively. This feeding results in an
asymmetric bull’s eye antenna with minimal profile (∼ 0.73λ0) and
no protrusions on the radiating interface. The fabricated 10-period
antenna operating in the Ka-band shows a directivity of 23.5 dBi, a
sidelobe level of −22.9 dB (>6 dB improvement compared to other
bull’s eye antennas) and a beamwidth of 3.7◦ and 6.7◦ in the E- and
H-plane, respectively. [--]
Materias
Bull's eye antenna,
Ka-band,
Leaky-wave antenna,
Millimeter waves
Editor
IEEE
Publicado en
IEEE Antennas and Wireless Propagation Letters 23(1), 2024, 209 - 213
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación /
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute of Smart Cities - ISC /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren Saila
Versión del editor
Entidades Financiadoras
This work was supported in part by the Engineering
and Physical Sciences Research Council (EPSRC) under Grant EP/S018395/1;
and in part by the Spanish “Ministerio de Ciencia e Innovación (MCIN)”
and the Spanish “Agencia Estatal de Investigación (AEI)” under Grant
MCIN/AEI/10.13039/501100011033/FEDER “Una manera de hacer Europa”
through Project RTI2018-094475-B-I00. The work of M. Navarro-Cía was
supported by the Royal Society under Grant RSG/R1/180040, and in part by the
University of Birmingham [Birmingham Fellowship].