Broadband frequency and angular response of a sinusoidal bull’s eye antenna
Fecha
2016Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión aceptada / Onetsi den bertsioa
Impacto
|
10.1088/0022-3727/49/26/265103
Resumen
A thorough experimental study of the frequency and beaming angle response of a metallic
leaky-wave bull’s eye antenna working at 77 GHz with a sinusoidally corrugated profile
is presented. The beam scanning property of these antennas as frequency is varied is
experimentally demonstrated and corroborated through theoretical and numerical results. From
the experimental results the dispersion di ...
[++]
A thorough experimental study of the frequency and beaming angle response of a metallic
leaky-wave bull’s eye antenna working at 77 GHz with a sinusoidally corrugated profile
is presented. The beam scanning property of these antennas as frequency is varied is
experimentally demonstrated and corroborated through theoretical and numerical results. From
the experimental results the dispersion diagram of the n = −1 and n = −2 space harmonics
is extracted, and the operation at different frequency regimes is identified and discussed. In
order to show the contribution of each half of the antenna, numerical examples of the nearfield
behavior are also displayed. Overall, experimental results are in good qualitative and
quantitative agreement with theoretical and numerical calculations. Finally, an analysis of the
beamwidth as a function of frequency is performed, showing that it can achieve values below
1.5° in a fractional bandwidth of 4% around the operation frequency, which is an interesting
frequency-stable broadside radiation. [--]
Materias
Bull’s eye,
Corrugated surface,
Leaky-wave horn antenna,
Millimeter waves,
Sinusoidal profile
Editor
IOP Publishing
Publicado en
Journal of Physics D: Applied Physics, Volume 49, Number 26
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa eta Elektronikoa Saila
Versión del editor
Entidades Financiadoras
This work was supported by the Spanish Government under
contract TEC2014-51902-C2-2-R. MN-C is supported by
University of Birmingham (Birmingham Fellowship). MB
acknowledges support by the Spanish Government under contract
RYC-2011-08221.