MICROSTRIP LINE AND CPW FED ULTRA WIDEBAND SLOT ANTENNAS WITH U-SHAPED TUNING STUB AND REFLECTOR

Abstract

MICROSTRIPLINEANDCPWFEDULTRAWIDEBANDSLOTANTENNASWITHU-SHAPEDTUNINGSTUBANDREFLECTORR.Chair,A.A.Kishk,K.F.Lee,C.E.Smith,andD.KajfezDepartmentofElectricalEngineeringCenterforAppliedElectromagneticSystemsResearch(CAESR)UniversityofMississippiUniversity,MS38677,USAAbstract—Widebandprintedrectangularslotantennasbackedwithreflectorsforunidirectionalradiationpatternsareinvestigated. AU-shaped tuning stub is used to improve the matching. Two differentfeeding mechanisms are introduced. A rectangular slot excited bymicrostriplinefeedwithaU-shapedtuningstubgivesanimpedancebandwidth of 110% (