PROJECT TITLE :

A Low-Cost Wideband Circularly Polarized Slot Array With Integrated Feeding Network and Reduced Height

ABSTRACT:

This letter proposes a wideband unidirectional circularly polarized (CP) slot array with a actually planar structure, which integrates the feeding network on a single substrate. The peak of the array is reduced by 0.5 compared to traditional arrays with a reflector. Four parasitic slots are etched at the perimeters of the bottom plane to boost the gain performance when the height is reduced. The measured results show that the bandwidths (BWs) for impedance, axial ratio (AR), and gain are all additional than twenty three%, and these 3 bandwidths nearly cowl the identical frequency band. The proposed array contains a sensible unidirectional pattern and can be used in base-station applications.