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dc.contributor.author Mousavi, P
dc.contributor.author Shafai, L
dc.contributor.author Veidt, B
dc.contributor.author Daneshmand, M
dc.contributor.author Dewdney, P
dc.date.accessioned 2007-10-04T17:53:35Z
dc.date.available 2007-10-04T17:53:35Z
dc.date.issued 2003-07-31
dc.identifier.citation 0018-926X; IEEE TRANS ANTENNAS PROPAGAT, JUL 2003, vol. 51, no. 7, p.1462 to 1475. en
dc.identifier.uri http://hdl.handle.net/1993/2881
dc.description.abstract A novel approach for analyzing the quasi-optical offset Large Adaptive Reflector (LAR) Cassegrain system is described. In this system a Feed-Reflector is used to illuminate a reconformable hyperboloid subreflector with 5 similar to 10 in diameter, located 500 in above the ground. An exact equation for the offset LAR surface is given in this paper. To scan the beam up to 60degrees which is one of the LAR requirements, the concept of the dual offset LAR with the Feed-Reflector is introduced. In this design the cross polarization is eliminated by a proper orientation of the subreflector. The parameters of the configuration are obtained by utilizing generalized Gauss-Laguerre beam modes and matrix representation of beam mode transformation factor. In this design the blockage effect due to the Feed-Reflector is totally removed. en
dc.format.extent 1306395 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.rights ©2003 IEEE. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Manitoba's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it. en
dc.subject antenna feeds en
dc.subject antenna radiation patterns en
dc.subject Gaussian beam en
dc.subject reflector antenna en
dc.title Characteristics and design of the LAR offset system with feed-reflector en
dc.status Peer reviewed en
dc.identifier.doi http://dx.doi.org/10.1109/TAP.2003.813634


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