Daniel F. Sievenpiper

Daniel F. Sievenpiper is a Professor in the Department of Electrical and Computer Engineering at the University of California, San Diego. His research focuses on novel electromagnetic media, including nonlinear and active metasurfaces and other periodic structures for applications spanning radio through optical frequencies. His work involves controlling the interaction between electromagnetic waves and matter, with specific techniques such as mathematics for arbitrary anisotropic impedance surface patterning, nonlinear or non-Foster based active materials, and nano-scale periodic structures for new optical effects. He has developed small broadband antennas and new devices for biological applications of electromagnetics. Sievenpiper joined UC San Diego in 2010 after a 11-year tenure at HRL, where he held various technical and management positions, including Director of the Applied Electromagnetics Laboratory.

Daniel Sievenpiper is an expert in electromagnetics, focusing on advanced electromagnetic structures and their applications. His research explores high-impedance surfaces, metasurfaces, and photonic crystals for antenna design, beam steering, and signal processing. He has developed tunable impedance surfaces for reconfigurable beam steering and investigated microwave components such as compact sensors and low-cost millimeter-wave imagers. His work includes experimental validation of small antenna performance and the design of dual-band omnidirectional antennas. Sievenpiper's research integrates electromagnetic theory with practical engineering solutions, emphasizing the use of artificial impedance surfaces and photonic band-gap structures to enhance device functionality and efficiency.