A wideband Fabry-Perot cavity antenna, powered by a rectangular waveguide and characterized by an extremely compact size (60 mm × 60mm × 20mm), is designed at the central frequency of 14 GHz. Using both parabolic approximation of the wave equation and the infinite array analysis, a second cavity composed by two metal-dielectric layers is designed to enlarge the cavity bandwidth, by performing an anomalous phase inversion in a wide range. A simple transition is used to couple a standard WR-75 waveguide to the cavity. A peak gain of about 20 dB and a 13.5% bandwidth (according to a -3dB gain) is numerically demonstrated.
Wideband and compact Fabry-Perot cavity antenna using a dual-layer periodic planar structure
COSTANZO, Sandra;DI MASSA, Giuseppe
2015-01-01
Abstract
A wideband Fabry-Perot cavity antenna, powered by a rectangular waveguide and characterized by an extremely compact size (60 mm × 60mm × 20mm), is designed at the central frequency of 14 GHz. Using both parabolic approximation of the wave equation and the infinite array analysis, a second cavity composed by two metal-dielectric layers is designed to enlarge the cavity bandwidth, by performing an anomalous phase inversion in a wide range. A simple transition is used to couple a standard WR-75 waveguide to the cavity. A peak gain of about 20 dB and a 13.5% bandwidth (according to a -3dB gain) is numerically demonstrated.File in questo prodotto:
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