Time-varying k-domain modulation around a point sink in time reversal cavity
Abstract
This paper derives and investigates a time-varying k-domain modulation in vector form using a time-reversal (TR) field decomposition theory proposed for the first time. First, the proposed theory illustrates that the TR field can exhibit super-resolution property from the perspective of spatial focusing pattern if a point sink is set at the initial source point. Afterward, the instantaneous TR fields with and without the point sink, as well as their k-domain patterns are compared to illustrate the time-varying k-domain modulation, which accounts for the superresolution property. The phenomenon observed and derived in this paper shows great potential in the applications empowered by super-resolution focusing, such as wireless communication carrying the subwavelength information and high spatial resolution wireless power transfer.
Keywords
Cite
@article{arxiv.2401.07535,
title = {Time-varying k-domain modulation around a point sink in time reversal cavity},
author = {Xin Liu and Jin-Shan Cui and Ren Wang and Yanhe Lv and Bing-Zhong Wang},
journal= {arXiv preprint arXiv:2401.07535},
year = {2024}
}