Next-generation telescopes with curved focal surface for ultralow surface brightness surveys
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz2068
Abstract: In spite of major advances in both ground- and space-based instrumentation, the ultralow surface brightness Universe (ULSB) still remains a largely unexplored volume in observational parameter space. ULSB observations provide unique constraints on a wide… read more here.
Keywords: surface; ultralow surface; curved focal; surface brightness ... See more keywords
Lens Antenna With Planar Focal Surface for Wide-Angle Beam-Steering Application
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Antennas and Propagation"
DOI: 10.1109/tap.2019.2894336
Abstract: A new lens antenna for wide-angle beam-steering application is presented. The 2-D lens permittivity profile according to Luneburg is modified using transformation optics to obtain a planar focal surface, allowing for a simple cost-effective planar… read more here.
Keywords: beam steering; lens antenna; beam; planar focal ... See more keywords