Abstract
A technique to synthesize a new category of radar cross-section (RCS)-reduction metasurfaces is presented. The appealing feature of the proposed technique is that by representing the generalized Snell-Descartes' law of reflection in the form of array factor, it unifies the two most widely studied and well-established modern RCS-reduction methods: checkerboard metasurfaces and gradient index metasurfaces. More importantly, it refines the concepts of both of these metasurfaces and overcomes numerous limitations associated with them. It can synthesize the RCS-reduction metasurfaces which can be placed along with almost any existing metasurface, without replacing the original metasurface that may be designed to serve a specific purpose, to reduce its RCS. The proposed technique is fundamentally based on scattering cancellation, and it is validated using artificial magnetic conductor technology for several configurations. Moreover, a phasor representation is developed and implemented for complex configurations to make the synthesis simpler and more insightful. Finally, to display the versatility of the proposed technique, an example of RCS-reduction metasurface has been synthesized and introduced to an existing high-gain metasurface ground plane available in the literature. This paper is confined to the conventional specular direction.
Original language | English (US) |
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Article number | 8515223 |
Pages (from-to) | 298-308 |
Number of pages | 11 |
Journal | IEEE Transactions on Antennas and Propagation |
Volume | 67 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2019 |
Keywords
- Artificial magnetic conductor (AMC)
- Bragg's law
- Fermat's principle
- Huygens' principle
- RCS reduction
- Schelkunoff polynomial method (SPM)
- array theory
- checkerboard
- generalized Snell-Descartes' law
- metasurfaces
- radar cross section (RCS)
- scattering cancellation
ASJC Scopus subject areas
- Electrical and Electronic Engineering