Design and validation of a X/ Ku band feed system for ScanSAR antenna
| Autor: | P. Cecchini, R. Mizzoni, F. Heliere, K. van't Klooster, G. Orlando |
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| Přispěvatelé: | Electromagnetics |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Beam waveguide antenna
Physics Cassegrain antenna Coaxial antenna business.industry Offset dish antenna Antenna aperture Antenna measurement Astrophysics::Instrumentation and Methods for Astrophysics Feed horn Antenna measurements Reflector antennas Antenna feeds Optics Apertures Antenna feed Antenna arrays business Instruments |
| Zdroj: | Proceedings of the 2015 International Conference on Electromagnetics in Advanced Applications, ICEAA 2015, 1086-1089 STARTPAGE=1086;ENDPAGE=1089;TITLE=Proceedings of the 2015 International Conference on Electromagnetics in Advanced Applications, ICEAA 2015 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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