University of California, Riverside

Department of Electrical and Computer Engineering



Metamaterial Surfaces: A New Paradigm in Electromagnetics


Metamaterial Surfaces: A New Paradigm in Electromagnetics
 
Fan Yang
Department of Electrical Engineering, University of Mississippi

Date: January 8, 2007
Time: 11:00am
Location: Bourns A265

This presentation addresses recent research progress in novel metamaterial surfaces, such as electromagnetic band-gap (EBG) structures and artificial magnetic conductors. It begins with a general overview of metamaterial surfaces, including their characterizations, designs, and applications in radio frequency (RF) devices and systems. The presentation is then followed by two detailed topics in this research area. One is the metamaterial analysis using the finite different time domain (FDTD) method. A simple and efficient FDTD/PBC algorithm is developed to analyze electromagnetic properties of periodic structures. This method chooses a constant horizontal wave number in the FDTD simulation, which avoids the requirements of future time domain data on the periodic boundaries. Next, a novel surface wave antenna (SWA) with an attractive low profile configuration is introduced. The surface wave antenna consists of a thin metamaterials surface supporting the propagation of surface waves, and a proper feeding structure that excites the surface waves. The operation mechanism and radiation performance of the surface wave antenna are presented. This low profile surface wave antenna exhibits a great potential for modern RF systems.

About the speaker:

Fan Yang received the B.S. and M.S. degrees from Tsinghua University and the Ph.D. degree from University of California, Los Angles, all in electrical engineering, in 1997, 1999, and 2002, respectively. He is an Assistant Professor at the Electrical Engineering Department, University of Mississippi. He was a Research Engineer and Lecturer at the Electrical Engineering Department, University of California, Los Angeles, from 2002 to 2004. His research interests include antennas, novel electromagnetic materials, numerical methods in electromagnetics, and RF/microwave devices and systems.
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