Open AccessMechanism of spatial super-resolution of time-reversed microwave system
Author(s) -
Yingming Chen,
BingZhong Wang,
Guang-Ding Ge
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.024101
Subject(s) - diffraction , resolution (logic) , image resolution , microwave , limit (mathematics) , field (mathematics) , wavelength , coulomb , physics , optics , near and far field , computational physics , computer science , quantum mechanics , electron , mathematical analysis , mathematics , pure mathematics , artificial intelligence
Time-reversed system with a sub-wavelength structure is one of the necessary conditions for the system to show spatial super-resolution characteristics. In the near field zone, Coulomb field predominates the transmission of signals. The resolution limit of Coulomb field is characterized only by the sizes and the spatial distribution of scatterers, which is useful for obtaining the super-resolution beyond the diffraction limit.