NDLI: Performance Improvements of Center-Fed Reflector Antennas Using Low Scattering Struts

Content Provider	IEEE Xplore Digital Library
Author	Riel, M. Brand, Y. Demers, Y. De Maagt, P.
Copyright Year	1963
Abstract	Conventional metallic struts used to support the feed in center-fed reflector antennas can significantly degrade the sidelobe, directivity and cross-polarization performances of the antenna. A promising approach to improve center-fed antenna performance is to use low scattering struts made of a metallic core covered with hard electromagnetic surfaces. In this paper, the performance improvements achievable by replacing conventional metallic struts by low scattering struts are studied for two space-based center-fed reflector antenna applications: a Ku-Band satellite communication antenna and the Sentinel-3 satellite C-Band/Ku-Band radar altimeter antenna. Measurements performed on these antennas show significant performance improvements (sidelobe levels, peak directivity, cross-polarization levels) when using the designed low scattering struts compared to using the conventional state of the art metallic struts. Two different configurations of low scattering struts using hard electromagnetic surfaces have been studied: a One Layer design using a single layer of dielectric material and a novel Two Layer design using two layers of dielectric. The performance improvements obtained with both designs are presented and discussed. Detailed comparisons between measurements and predictions are also presented.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	1269
Ending Page	1280
Page Count	12
File Size	3790639
File Format	PDF
ISSN	0018926X
Volume Number	60
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Antenna measurements Reflector antennas Directive antennas Satellite antennas Electromagnetic scattering low scattering struts Center-fed reflector antennas hard surface electromagnetic materials
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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