DocumentCode
2874822
Title
Imaging beyond the diffraction limit by employing a super-oscillatory filter
Author
Amineh, Reza K. ; Eleftheriades, George
Author_Institution
Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada
fYear
2013
fDate
7-13 July 2013
Firstpage
344
Lastpage
345
Abstract
In this paper, we propose an approach to overcome the well-known “diffraction limit” when imaging sources at several wavelengths away. We employ the superdirective antenna´s concepts to design a super-oscillatory filter (SOF) based on the properties of Tschebyscheff polynomials. The SOF is applied to the reconstructed image based on the back-propagation algorithm. We demonstrate the capability of this approach when imaging two sources spaced at 5λ away.
Keywords
directive antennas; filters; image reconstruction; Tschebyscheff polynomial; back propagation algorithm; diffraction limit; image reconstruction; superdirective antenna; superoscillatory filter; Antennas; Diffraction; Image reconstruction; Image resolution; Imaging; Microwave filters; Optical filters;
fLanguage
English
Publisher
ieee
Conference_Titel
Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE
Conference_Location
Orlando, FL
ISSN
1522-3965
Print_ISBN
978-1-4673-5315-1
Type
conf
DOI
10.1109/APS.2013.6710833
Filename
6710833
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