By Topic

APERTIF: Phased array feeds for the westerbork synthesis radio telescope

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
van Cappellen, W.A. ; ASTRON, Dwingeloo, Netherlands ; Bakker, L.

Present day synthesis radio telescopes have limited survey capabilities because of field of view restrictions. A novel method to form multiple beams on the sky is to employ a phased array feed (PAF). In telescopes with small f/D ratios, it is the only way to form closely packed beams on the sky. An additional advantage of this technique is that a PAF allows optimizing the secondary beam in terms of sensitivity, sidelobes and polarization characteristics. APERTIF (“APERture Tile In Focus”) is a PAF system that is being developed for the Westerbork Synthesis Radio Telescope (WSRT) to increase its survey speed with a factor 20. This paper presents a system overview of APERTIF and measurement results that demonstrate the unique capabilities of PAFs in practice: Wide field of view (scan range), low system temperature, excellent illumination efficiency, synthesis imaging and a significant reduction of the reflector - feed interaction.

Published in:

Phased Array Systems and Technology (ARRAY), 2010 IEEE International Symposium on

Date of Conference:

12-15 Oct. 2010