publication . Other literature type . Article . Preprint . 2018

Coherently Enhanced Wireless Power Transfer

Alex Krasnok; Sergey V. Li; Andrea Alù; Andrey Generalov; Denis G. Baranov; Denis G. Baranov;
Open Access
  • Published: 02 Apr 2018
  • Publisher: American Physical Society (APS)
Abstract
Extraction of electromagnetic energy by an antenna from impinging external radiation is at the basis of wireless communications and power transfer (WPT). The maximum of transferred energy is ensured when the antenna is conjugately matched, i.e., when it is resonant and it has an equal coupling with free space and its load, which is not easily implemented in near-field WPT. Here, we introduce the concept of coherently enhanced wireless power transfer. We show that a principle similar to the one underlying the operation of coherent perfect absorbers can be employed to improve the overall performance of WPT and potentially achieve its dynamic control. The concept r...
Subjects
free text keywords: General Physics and Astronomy, ta213, Physics - Applied Physics, Coupling, Wave impedance, Waveguide, law.invention, law, Acoustics, Maximum power transfer theorem, Physics, Wireless, business.industry, business, Interference (wave propagation), Wireless power transfer, Dipole antenna
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