Broadband Circularly Polarized Printed Crossed-Dipole Antenna and Its Arrays for Cellular Base Stations
This study presents and investigates broadband circularly polarized (CP) printed crossed dipole antenna and its arrays.The proposed antenna comprises a pair of crossed fan-shaped dipoles, two kinds of parasitic elements, and a reflector with two vertical sidewalls.A three-quarter circular phase shifter connected to the fan-shaped arms of this anten