NDLI: A dual band array-fed reflector ScanSAR antenna

Content Provider	IEEE Xplore Digital Library
Author	Cecchini, P. Mizzoni, R. Orlando, G. Heliere, F. van't Klooster, K.
Copyright Year	2012
Description	Author affiliation: Thales Alenia Space Italia S.p.A., Via Saccomuro 24, Rome, Italy (Cecchini, P.; Mizzoni, R.; Orlando, G.) \|\| ESA/ESTEC TEC-EEA, 2200 AG, Noordwijk, The Netherlands (Heliere, F.; van't Klooster, K.)
Abstract	The paper presents the array-fed reflector antenna of the CoReH2O (Cold Regions Hydrology High-resolution Observatory) SAR instrument currently being investigated within Phase-A under ESA contract. The antenna is a dual linearly polarized single-offset reflector, illuminated by two side linear arrays operating in X and Ku band respectively. Each array comprises seven compact multimodal horns in quasi rectangular waveguide. These 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 right modal content at aperture, very close to the analytical patterns synthesized through benchmarks. The Ku band feed has been subjected to a pre-development activity aimed at validating the design. The measured results at feed level show good agreement with predictions. Measured pattern has been used as primary source in the antenna model and satisfactory performance have been predicted on radiated beams. The X band feed has been designed with the same electromagnetic model adopted for Ku band and all performances are predicted with the same accuracy. Further breadboarding activities are foreseen in X band, finalized to characterize a reduced dual band feed cluster and the relevant switching systems, taking into account the effect of mutual coupling between the two frequency bands.
Starting Page	3431
Ending Page	3435
File Size	747541
Page Count	5
File Format	PDF
ISBN	9781457709180
e-ISBN	9781457709203
e-ISBN	9781457709197
DOI	10.1109/EuCAP.2012.6206441
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-03-26
Publisher Place	Czech Republic
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Conferences Europe Antennas
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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