Design and validation of a X/ Ku band feed system for ScanSAR antenna

P. Cecchini, R. Mizzoni, G. Orlando, F. Hélière, Kees van 't Klooster

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

Abstract

The paper presents the design and validation of a dual band feed system for the reflector antenna of the CoReH2O (Cold Regions Hydrology High-resolution Observatory) SAR instrument, investigated under ESA contract. The antenna is a dual linearly polarized single-offset reflector, illuminated by two side feed arrays operating in X and Ku band respectively. Each array comprises seven compact multimodal horns in quasi rectangular waveguide. The horns are sequentially excited, a couple at a time, for optimum antenna pattern synthesis and secondary beams overlap. Each horn is a multiple step rectangular waveguide structure that provides the proper modal content at aperture, very close to the benchmark patterns analytically synthesized by modal superimposition at feed apertures level. The RF design has been validated through a complete characterization by test of the feeding system, proceeding from the single feeding elements to a complete feeding system composed by 4+4 elements. The measured results showed very good agreement with predictions at each stage of the campaign. Measured pattern has been used as primary source in the antenna model and very good performance have been predicted on secondary beams.

Original languageEnglish
Title of host publicationProceedings of the 2015 International Conference on Electromagnetics in Advanced Applications, ICEAA 2015
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages1086-1089
Number of pages4
ISBN (Electronic)978-1-4799-7806-9
DOIs
Publication statusPublished - 12 Oct 2015
Event17th International Conference on Electromagnetics in Advanced Applications, ICEAA 2015 - "Centro Congressi Torino Incontra", Torino, Italy
Duration: 7 Sep 201511 Sep 2015
Conference number: 17

Conference

Conference17th International Conference on Electromagnetics in Advanced Applications, ICEAA 2015
Abbreviated titleICEAA 2015
CountryItaly
CityTorino
Period7/09/1511/09/15
Other

Keywords

  • Antenna arrays
  • Antenna feeds
  • Antenna measurements
  • Apertures
  • Instruments
  • Reflector antennas

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