Time-varying k-domain modulation around a point sink in time reversal cavity
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866914642059591680 |
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| author | Liu, Xin Cui, Jin-Shan Wang, Ren Lv, Yanhe Wang, Bing-Zhong |
| author_facet | Liu, Xin Cui, Jin-Shan Wang, Ren Lv, Yanhe Wang, Bing-Zhong |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_07535 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Time-varying k-domain modulation around a point sink in time reversal cavity Liu, Xin Cui, Jin-Shan Wang, Ren Lv, Yanhe Wang, Bing-Zhong Optics Applied Physics 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. |
| title | Time-varying k-domain modulation around a point sink in time reversal cavity |
| topic | Optics Applied Physics |
| url | https://arxiv.org/abs/2401.07535 |