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Análisis de un Array de Antenas de Parche Tipo Bow-Tie con Lentes Acopladas en Banda

AuthorsOrtiz, David ; Colín, A.; Martínez-González, Enrique
Issue Date2010
CitationURSI 2010
AbstractA printed array composed of 4 bow-tie slot antennas is designed on Alumina substrate to operate in the Ka-band. The reported design is suitable for the integration in microwave systems used in radar or radio astronomy detection. The array uses aperture coupling between the CPW feed lines and a parasitic patch, made on Arlon 25N, with the substrates layers in a hi-lo configuration. In order to feed the array, a combination of Wilkinson power dividers with microstrip to CPW transitions is designed to complete the feeding network. Two hemispherical lenses made of low-permittivity materials, Plexiglas and Teflon, joined to the array, enhance its performance. Simulation results exhibit a frequency range of operation from 24 to 40 GHz with a maximum impedance bandwidth of 25% achieved for -10 dB return loss. The radiation patterns show a maximum gain of around 15 dB with HPBW (half power bandwidth) of ± 8º in both E and H planes, and whose first side lobes are more than 15 dB below the main lobe. The presented results of this array will be considered as a feasibility study to the phase II of the experiment called QUIJOTE, which is designed to study the polarization of the Cosmic Microwave Background (CMB).
Description4 páginas, 7 figuras.-- Trabajo presentado al 25 Simposium Nacional de la Unión Científica Internacional de Radio (URSI) en la sesión III: Antenas III, celebrado en Bilbao (España) del 15 al 17 de septiembre de 2010.
Publisher version (URL)http://www.ursi2010.org/?path=sesiones
Appears in Collections:(IFCA) Comunicaciones congresos
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