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

A.B. Smolders, A. Zamanifekri, C. Zhang, M.J. Arts, W.A. Cappellen, van

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

2 Citations (Scopus)
1 Downloads (Pure)

Abstract

cularly 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.
Original languageEnglish
Title of host publicationProceedings of the 6th European Conference on Antennas and Propagation (EUCAP), 26-30 March 2012, Prague, Czech Republic
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages1077-1080
DOIs
Publication statusPublished - 2012
Event6th European Conference on Antennas and Propagation (EuCAP 2012) - Prague, Czech Republic
Duration: 26 Mar 201230 Mar 2012
Conference number: 6
http://www.eucap2012.org/

Conference

Conference6th European Conference on Antennas and Propagation (EuCAP 2012)
Abbreviated titleEuCAP 2012
CountryCzech Republic
CityPrague
Period26/03/1230/03/12
Internet address

Fingerprint

Dive into the research topics of 'Improved axial ratio quality for radio telescope applications with a phased array feed'. Together they form a unique fingerprint.

Cite this