Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

Focal plane arrays for large reflector antennas: first results of a demonstrator project

[+] Author Affiliations
Marianna V. Ivashina, Jan Geralt bij de Vaate, Robert Braun, Jaap D. Bregman

ASTRON (Netherlands)

Proc. SPIE 5489, Ground-based Telescopes, 1127 (September 28, 2004); doi:10.1117/12.554895
Text Size: A A A
From Conference Volume 5489

  • Ground-based Telescopes
  • Jacobus M. Oschmann, Jr.
  • Kona, United States | June 21, 2004

abstract

The surveying speed of large reflectors can be increased by one or two orders of magnitude when the focal fields are sampled with a dense phased array. In a dense array consisting of a large number of antenna elements (100 up to 1000), multiple beams can be synthesised and steered electronically. This collecting and manipulating of the entire electric field in the focal plane creates the possibility of a simultaneously improvement in the efficiency of existing telescopes and open up wide fields-of-view. This paper will describe the first results of the EU project FARADAY. The approach chosen in FARADAY is to use a Vivaldi array of 72 antenna elements configured in 8x9 grid. The analogue beamformer, integrated with the antenna array, syntheses beams by using for example 3x3 elements combined in three rings, where each ring is given a specific weight factor. The number of beams has been limited to two in this demonstrator project. Further more we will explore the possibilities and limitations of the large-scale use of Focal Plane Array's, in particular for the fourteen 25-meter reflectors of the Westerbork Syntheses Radio Telescope (WSRT).

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Marianna V. Ivashina ; Jan Geralt bij de Vaate ; Robert Braun and Jaap D. Bregman
"Focal plane arrays for large reflector antennas: first results of a demonstrator project", Proc. SPIE 5489, Ground-based Telescopes, 1127 (September 28, 2004); doi:10.1117/12.554895; http://dx.doi.org/10.1117/12.554895


Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.