Near-Field Focusing Plates and Their Design
Classical Physics
2009-11-13 v1
Abstract
This paper describes the design of near-field focusing plates, which are grating-like structures that can focus electromagnetic radiation to spots or lines of arbitrarily small subwavelength dimension. A general procedure is outlined for designing a near-field plate given a desired image, and its implementation at microwave frequencies is discussed. Full-wave (method of moments) simulations clearly demonstrate the near-field plate's ability to overcome the diffraction limit. Finally, it is shown that the performance of near-field plates is weakly affected by losses.
Keywords
Cite
@article{arxiv.0708.0049,
title = {Near-Field Focusing Plates and Their Design},
author = {A. Grbic and R. Merlin},
journal= {arXiv preprint arXiv:0708.0049},
year = {2009}
}
Comments
11 pages, 6 figures, 1 table