A Spherical Lens For The Ska

Details A Spherical Lens For The Ska A Spherical Lens For The Ska

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004exa....17..141k&link_type=abstract

Experimental Astronomy, Volume 17, Issue 1-3, pp. 141-148

Astronomy and Astrophysics

Astronomy

Artificial Dielectric, Luneburg Lens, Square Kilometre Array (Ska)

Scientific paper

Spherical refracting lenses based upon the Luneburg lens offer unique capabilities for radioastronomy, but the large diameter of lens required for the Square Kilometre Array (SKA) means that traditional lens materials are either too dense or too lossy. We are investigating a composite dielectric that theoretically offers extremely low loss and low density, and is suitable for low-cost mass production. We describe our progress towards realising this material and demonstrating the manufacturing concept, via the manufacture and testing of a small (0.9 m) spherical lens.

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