By Topic

Improved axial ratio quality for radio telescope applications with a phased array feed

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

5 Author(s)
Zamanifekri, A. ; Eindhoven Univ. of Technol. Eindhoven, Eindhoven, Netherlands ; Smolders, A.B. ; Chunzhou Zhang ; Arts, M.
more authors

Circularly polarized radiation is frequently used in satellite communication. This paper discusses how circular polarization can be generated by means of an array of linearly-polarized antenna elements by applying the sequential rotation technique. A calibration method is used to improve the axial ratio from ±30° to ±60° off bore sight by using a 4-bit accuracy for the active components. A measurement campaign was organized based on a demonstrator developed at ASTRON. The calibration of the axial ratio is applied to the measured element patterns of the ASTRON egg-crate structure antenna array operating at 7.14 GHz. The results prove that the axial ratio can be improved significantly. Finally the same technique will be applied to a linear array operating at 20 GHz with sequential rotation configuration in front of the reflector to improve the axial ratio in the boresight direction.

Published in:

Antennas and Propagation (EUCAP), 2012 6th European Conference on

Date of Conference:

26-30 March 2012