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Proceedings Paper

Two-dimensional fiber optic control of a wideband array transmitter
Author(s): Paul J. Matthews; Michael Y. Frankel; Ronald D. Esman
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Paper Abstract

We report on the first demonstration of a 2D, fiber-optic, true time-delay control system capable of squint-free steering of an ultrawideband array. The system is based on a novel fiber-optic prism technique with separate azimuth and elevation control stages. In this technique, high dispersion fiber is used to provide a wavelength-dependent time-delay between the rows and columns of the array. The fiber-optic control system was used to drive a 4 by 4 array of flared- notch elements. The system was tested in a compact radar range and 2D array patterns were obtained. The system demonstrated independent +/- 30 degrees elevation steering of a 4 by 4 array over a 6 to 18 GHz bandwidth with no observable squint. We believe this is the first demonstration of such a system. The design of the demonstrated system allows for transitioning to larger, real-world ultrawideband array transmitters.

Paper Details

Date Published: 5 November 1996
PDF: 11 pages
Proc. SPIE 2845, Radar Processing, Technology, and Applications, (5 November 1996); doi: 10.1117/12.257229
Show Author Affiliations
Paul J. Matthews, Naval Research Lab. (United States)
Michael Y. Frankel, Naval Research Lab. (United States)
Ronald D. Esman, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 2845:
Radar Processing, Technology, and Applications
William J. Miceli, Editor(s)

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