• Corpus ID: 248810817

Challenging Fundamental Limitations in Electromagnetics with Time-Varying Systems

@inproceedings{Hayran2022ChallengingFL,
  title={Challenging Fundamental Limitations in Electromagnetics with Time-Varying Systems},
  author={Zeki Hayran and Francesco Monticone},
  year={2022}
}
: Time-varying components provide an exceptional opportunity to explore novel means for building efficient electromagnetic devices. While such explorations date back to more than half a century ago, recent years have experienced a renewed and increased interest into the design of dynamic electromagnetic systems. This resurgence has been partly fueled by the desire to surpass the performance of conventional devices, and to enable systems that can challenge various well-established physical bounds… 

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References

SHOWING 1-10 OF 99 REFERENCES
Space-Time Modulation: Principles and Applications
The ever-increasing demand for high-datarate wireless systems has led to a crowded electromagnetic (EM) spectrum. This demand has successively spurred the development of versatile microwave and
Time-Varying Components for Enhancing Wireless Transfer of Power and Information
TLDR
The relevance of "electromagnetic systems engineered by temporal modulation" from radio frequencies to even optical wavelengths is established and by periodically modulating the mutual inductance between the transmitter and receiver, the fundamental limits of classical wireless power transfer systems can be overcome.
Analysis and Measurement of a Time-Varying Matching Scheme for Pulse-Based Receivers With High-$Q$ Sources
A time-varying matching scheme designed for pulse- based high-quality factor (Q) receiving systems is introduced and analyzed. The proposed technique takes advantage of the time-domain
Soft Temporal Switching of Transmission Line Parameters: Wave-Field, Energy Balance, and Applications
Time-varying guiding structures introduce an additional degree of freedom, besides spatial variation, that enables better control over the guided wave in a device. Periodically, time-modulated
Temporal aiming
TLDR
This work proposes an idea for changing the direction of the energy propagation of electromagnetic waves by using time-dependent metamaterials, the permittivity of which is rapidly changed from isotropic to anisotropic values, an approach that is called temporal aiming.
Improved Signal-to-Noise Ratio, Bandwidth-Enhanced Electrically Small Antenna Augmented With Internal Non-Foster Elements
Non-Foster technology facilitates the ability to surpass the Chu bandwidth limit associated with electrically small antennas (ESAs). Nonetheless, in addition to challenging stability issues, the
Time-Varying Reactive Elements for Extreme Accumulation of Electromagnetic Energy
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 the source, and
Time-Varying Matching Networks for Signal-Centric Systems
A time-varying matching network is proposed for signal-centric systems. This matching network achieves significantly higher bandwidth than conventional designs with the same circuit topology and
Capturing Broadband Light in a Compact Bound State in the Continuum
Trapping and storing light for arbitrary time lengths in open cavities is a major goal of nanophotonics, with potential applications ranging from energy harvesting to optical information processing.
Active Scattering-Cancellation Cloaking: Broadband Invisibility and Stability Constraints
TLDR
This article uses a 1-D example to show, for the first time, that active cloaks have indeed the potential to operate beyond the Bode–Fano bandwidth limit, and designs a simple 3-D active cloak that exhibits a much broader bandwidth than passive scattering-cancellation cloaks.
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