This paper presents a new planar feeding structure for wideband resonant-cavity antennas (RCAs). The feeding structure consists of two stacked dielectric slabs with an air-gap in between. A U-shaped slot, etched in the top metal-cladding over the upper dielectric slab, is fed by a planar stripline printed on the back side of the dielectric slab. The lower dielectric slab backed by a ground plane, is used to reduce back radiation. To validate the wideband performance of the new structure, in an RCA configuration, it was integrated with a wideband all-dielectric single-layer partially reflecting superstructure (PRS) with a transverse permittivity gradient (TPG). The single-layerRCAfed by the U-slot feeding structure demonstrated a peak directivity of 18.5 dBi with a 3 dB directivity bandwidth of 32%. An RCA prototype was fabricated and experimental results are presented.
|Titolo:||A Stripline-Based Planar Wideband Feed for High-Gain Antennas with Partially Reflecting Superstructure|
|Data di pubblicazione:||2019|
|Digital Object Identifier (DOI):||10.3390/mi10050308|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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|BabaHashimiAsadniaMatekovitsEsselle_A_Stripline_BasedPlanarWidebandFeed_for_High_GainAntennas_with_PartiallyReflectingSuperstructure_Micromachines-10-00308.pdf||BabaHashimiAsadniaMatekovitsEsselle_A_Stripline_BasedPlanarWidebandFeed_for_High_GainAntennas_with_PartiallyReflectingSuperstructure_Micromachines-10-00308.pdf||2. Post-print||Visibile a tuttiVisualizza/Apri|