202 citations · 1.3k across the 26 of their papers we have counts for
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Programmable Nonreciprocal Metaprism
Sajjad Taravati, George V. Eleftheriades
Optical prisms are made of glass and map temporal frequencies into spatial frequencies by decomposing incident white light into its constituent colors and refract them into differe…
Four-Dimensional Wave Transformations By Space-Time Metasurfaces
Sajjad Taravati, George V. Eleftheriades
Static metasurfaces have shown to be prominent compact structures for reciprocal and frequency-invariant transformation of electromagnetic waves in space. However, incorporating te…
Nonreciprocal-Beam Phased-Array Antennas
Reza Karimian, Shahrokh Ahmadi, Mona Zaghloul +1
This study presents a nonreciprocal-beam phased-array antenna constituted of phase-gradient patch radiators integrated with transistor-based nonreciprocal phase shifters. Such an a…
Space-Time Medium Functions as a Perfect Antenna-Mixer-Amplifier Transceiver
Sajjad Taravati, George V. Eleftheriades
We show that a space-time-varying medium can function as a front-end transceiver, i.e., an antenna-mixer-amplifier. Such a unique functionality is endowed by space-time surface wav…