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Proceedings Paper

Electronic beam steering for passive millimeter-wave imaging
Author(s): Andrew Robert Harvey; Roger Appleby; Peter R. Coward; Rupert N. Anderton; Gerald D. Hawkins
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Paper Abstract

The long-term potential of terrestrial passive millimeter imaging is contingent upon demonstrating real-time imaging with a system that can be conveniently a deployed at an acceptable cost. For small apertures with modest resolution, imaging can be readily achieved using fully-staring focal plane arrays, but as in the infrared, the high cost per pixel means that scanning (preferably electronic) of a smaller number of detectors across the image is attractive. Aperture synthesis using sparse and filled arrays of antennas offers high sensitivity and resolution from a small number of antennas that can be conformal to vehicle shape, but requires complicated beam-forming technologies. Alteratively, electronic scanning can be accomplished by electronic modulation of a filled antenna. This paper will discuss novel approaches and technology requirements for achieving electronic beam-steering.

Paper Details

Date Published: 13 November 1998
PDF: 10 pages
Proc. SPIE 3465, Millimeter and Submillimeter Waves IV, (13 November 1998); doi: 10.1117/12.331143
Show Author Affiliations
Andrew Robert Harvey, Defence Evaluation and Research Agency Malvern (United Kingdom)
Roger Appleby, Defence Evaluation and Research Agency Malvern (United Kingdom)
Peter R. Coward, Defence Evaluation and Research Agency Malvern (United Kingdom)
Rupert N. Anderton, Defence Evaluation and Research Agency Malvern (United Kingdom)
Gerald D. Hawkins, Thomson Thorn Missile Electronics (United Kingdom)

Published in SPIE Proceedings Vol. 3465:
Millimeter and Submillimeter Waves IV
Mohammed N. Afsar, Editor(s)

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