University of Hawaii

Department of Electrical Engineering

Low-Profile, Wide-Band Antennas for Wireless Communications

Date: 2006-05-21
Time: 9:00 AM
Location: Holmes 389
Speaker: Jodie Bell, HCAC, Department of Electrical Engineering

This thesis presents the implementation of electromagnetic band-gap (EBG) structures with an inherently wide-band Archimedean spiral antenna. The EBG structure is designed to emulate a perfect magnetic conductor (PMC). This combination provides a highly desirable low-profile and wide-band antenna. Utilization of an EBG structure offers an antenna height reduction of 1/12.5, compared to the traditional /?//4 cavity backed implementation of spiral antennas. This design also offers full scalability and the implemented approach allows the spiral antenna to maintain a considerable fraction (68%) of its inherent broadband characteristics with no loss to its gain. 



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