A Broadband UHF Antenna on a Non - UniformAperiodic ( NUA ) EBG Surface Report

A new concept to design thin directional broadband antennas on EBG or HIS surfaces is proposed. Using our proposed concept an octave or more bandwidth is obtained with fairly thin EBG structures even at UHF frequencies allowing low profile antenna design and development. At the heart of the proposed scheme lies the concept of a non-uniform aperiodic EBG surface where the EBG patch size and their inter-element distance are varied according to a specific tapering profile. Conference Name: IEEE Antennas and Propagation Society International Symposium Conference Date: July 07, 2013 A Broadband UHF Antenna on a Non-Uniform Aperiodic (NUA) EBG Surface Nowrin H. Chamok and Mohammod Ali* Department of Electrical Engineering University of South Carolina Columbia, South Carolina, USA Email: [email protected]; [email protected] Steven Weiss Antennas and RF Technology Integration Branch US Army Research Laboratory Adelphi, MD, USA Email: [email protected] Abstract—A new concept to design thin directional broadband antennas on EBG or HIS surfaces is proposed. Using our proposed concept an octave or more bandwidth is obtained with fairly thin EBG structures even at UHF frequencies allowing low profile antenna design and development. At the heart of the proposed scheme lies the concept of a non-uniform aperiodic EBG surface where the EBG patch size and their inter-element distance are varied according to a specific tapering profile.A new concept to design thin directional broadband antennas on EBG or HIS surfaces is proposed. Using our proposed concept an octave or more bandwidth is obtained with fairly thin EBG structures even at UHF frequencies allowing low profile antenna design and development. At the heart of the proposed scheme lies the concept of a non-uniform aperiodic EBG surface where the EBG patch size and their inter-element distance are varied according to a specific tapering profile.