123 citations · 334 across the 13 of their papers we have counts for
13 papers
Simultaneous Angle-of-Arrival Sensing and Anomalous Deflection with Aperiodically Loaded Patch Arrays
Mostafa Movahediqomi, Sravan K. R. Vuyyuru, Grigorii Ptitcyn +4
We propose and numerically demonstrate a reconfigurable patch antenna array that enables simultaneous incident wave sensing and anomalous reflection without prior knowledge of the…
Simultaneous High-Efficiency Anomalous Reflection and Angle of Arrival Sensing in Reconfigurable Intelligent Surfaces
Mostafa Movahediqomi, Yongming Li, Grigorii Ptitcyn +2
In this work, we introduce reconfigurable intelligent surfaces designed to simultaneously perform reflection of single or multiple incident waves toward the receiver or receivers a…
Tunable Perfect Anomalous Reflection Using Passive Aperiodic Gratings
Yongming Li, Xikui Ma, Xuchen Wang +3
Realizing continuous sweeping of perfect anomalous reflection in a wide angular range has become a technical challenge. This challenge cannot be overcome by the conventional aperio…
Time-modulated circuits and metasurfaces for emulating arbitrary transfer functions
Grigorii Ptitcyn, Mohammad Sajjad Mirmoosa, Silvi Hrabar +1
Temporal modulation unlocks possibilities to dynamically control and modify the response of electromagnetic systems. Employing explicit dependencies of circuit or surface parameter…
Comparison Between Different Designs and Realizations of Anomalous Reflectors
Mostafa Movahediqomi, Grigorii Ptitcyn, Sergei Tretyakov
Metasurfaces enable efficient manipulation of electromagnetic radiation. In particular, control over plane-wave reflection is one of the most useful features in many applications.…
Antenna bandwidth engineering through time-varying resistance
M. H. Mostafa, N. Ha-Van, P. Jayathurathnage +3
Operational bandwidth of resonant circuits is limited by the resonator's size, which is known as the Chu limit. This limit restricts miniaturization of antennas, as the antenna ban…
Dipole polarizability of time-varying particles
M. S. Mirmoosa, T. T. Koutserimpas, G. A. Ptitcyn +2
Invariance under time translation (or stationarity) is probably one of the most important assumptions made when investigating electromagnetic phenomena. Breaking this assumption is…
Nonreciprocity in Bianisotropic Systems with Uniform Time Modulation
Xuchen Wang, Grigorii Ptitcyn, Ana Díaz-Rubio +4
Physical systems with material properties modulated in time provide versatile routes for designing magnetless nonreciprocal devices. Traditionally, nonreciprocity in such systems i…
Instantaneous Radiation from Time-Varying Electric and Magnetic Dipoles
M. S. Mirmoosa, G. A. Ptitcyn, R. Fleury +1
Radiation from magnetic and electric dipole moments is a key subject in theory of electrodynamics. Although people treat the problem thoroughly in the context of frequency domain,…
Dynamic meta-atoms
Grigorii Ptitcyn, Mohammad S. Mirmoosa, Sergei A. Tretyakov
Interaction of electromagnetic radiation with time-variant objects is a fundamental problem whose study involves foundational principles of classical electrodynamics. Such study is…
Unlimited Accumulation of Electromagnetic Energy Using Time-Varying Reactive Elements
M. S. Mirmoosa, G. A. Ptitcyn, V. S. Asadchy +1
Accumulation of energy by reactive elements is limited by the amplitude of time-harmonic external sources. In the steady-state regime, all incident power is fully reflected back to…
Extreme Asymmetry in Metasurfaces via Evanescent Fields Engineering: Angular-Asymmetric Absorption
Xuchen Wang, Ana Diaz-Rubio, Viktar S. Asadchy +4
On the quest towards full control over wave propagation, the development of compact devices that allow asymmetric response is a challenge. In this Letter, we introduce a new paradi…
Transmission magnitude and phase control for polarization-preserving reflectionless metasurfaces
Do-Hoon Kwon, Grigorii Ptitcyn, Ana Díaz-Rubio +1
For transmissive applications of electromagnetic metasurfaces, an array of subwavelength Huygens' metaatoms are typically used to eliminate reflection and achieve a high transmissi…