50 citations · 153 across the 13 of their papers we have counts for
8 papers · 1 filter
Time-Varying Wireless Power Transfer Systems for Improving Efficiency
X. Wang, I. Krois, N. Ha-Van +4
Conventional wireless power transfer systems are linear and time-invariant, which sets fundamental limitations on their performance, including a tradeoff between transfer efficienc…
Electromagnetic Effects in Anti-Hermitian Media with Gain and Loss
L. Freter, M. S. Mirmoosa, A. Sihvola +2
Incorporating both gain and loss into electromagnetic systems provides possibilities to engineer effects in unprecedented ways. Concerning electromagnetic effects in isotropic medi…
Effective Mid-Range Wireless Power Transfer with Compensated Radiation Loss
N. Ha-Van, C. R. Simovski, F. S. Cuesta +2
In conventional inductive wireless power devices, the energy is transferred via only reactive near fields, which is equivalent to non-radiative Förster energy transfer in optics. R…
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…
Emulating Bianisotropic Coupling Through Coherent Illumination
F. S Cuesta, M. S. Mirmoosa, S. A. Tretyakov
One of the main advantages of reciprocal bianisotropic metasurfaces is their capability to produce asymmetric scattering depending from which side they are illuminated and on the h…
Multi-functional metasurface architecture for amplitude, polarization and wavefront control
A. Pitilakis, M. Seckel, A. C. Tasolamprou +10
Metasurfaces (MSs) have been utilized to manipulate different properties of electromagnetic waves. By combining local control over the wave amplitude, phase, and polarization into…
Coherent Asymmetric Absorbers
F. S. Cuesta, A. D. Kuznetsov, G. A. Ptitcyn +2
Most applications of metasurfaces require excitation and control of both electric and magnetic surface currents. For such purpose, the metasurface must have a finite thickness to h…
Coherently time-varying metasurfaces
M. H. Mostafa, A. Diaz-Rubio, M. S. Mirmoosa +1
Known coherent metasurfaces control interference of waves of a given frequency with other coherent waves at the same frequency, either illuminating from a different direction or cr…