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  • Keynote by Prof. Dan Sievenpiper

    Prof. Dan Sievenpiper
    University of California, USA

    Title: Topological Antennas

    Beginning with an introduction to topological structures in electromagnetics, we will provide several examples of photonic topological insulators in metallic and dielectric media. We will discuss numerical methods for characterizing them in both inverse space and real space, and we will present several kinds of interface modes based on complementary impedance surfaces, spin and valley type structures, Zak phase structures, and antiphase boundaries. We will also discuss chiral modes in both two and three dimensions. We will then introduce several antenna applications including phase-locked propagation based on Dirac points, reflectionless radiation, and generation of orbital angular momentum modes. We will conclude with a discussion of recent research in nonlinear and plasma-based topological structures.

    Professor Dan Sievenpiper joined the UC San Diego faculty in 2010. He received his BS in 1994 and his PhD in 1999 from UCLA, where he studied photonic crystals and other periodic structures, and invented the high impedance electromagnetic surface. Dan joined HRL (the former Hughes Research Laboratories) in Malibu, CA in 1999. During the following 11 years, he and his team developed new electromagnetic structures, with an emphasis on small, conformal, tunable, and steerable antennas. Dan held a variety of technical and management positions at HRL including Director of the Applied Electromagnetics Laboratory. In 2010 he joined UC San Diego, where his research is focused on artificial media, and the integration of active electronics with electromagnetic structures and antennas to enable new capabilities and applications. In 2008, Dan received the URSI Issac Koga Gold Medal, and also the IEEE Antennas and Propagation Society Piergiorgio Uslenghi Letters Prize Paper Award. In 2009, he was named as a Fellow of the IEEE, and in 2019, he was awarded the John D. Kraus Antenna Award. During 2010-2017, Dan served as an associate editor of IEEE Antennas and Wireless Propagation Letters. He also served as the chair of the IEEE Antennas and Propagation Society Administrative Committee on New Technology Directions from 2013-2014, and as the general chair of the IEEE Antennas and Propagation Symposium and URSI Radio Science Meeting which was held in San Diego in 2017. He has served as the vice chair of the ECE department from 2019 to present. Dan currently has more than 80 issued patents and more than 200 publications.

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