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A study of cross polarization effects in reflector antenna arrays

Show simple item record Jamnejad, Vahraz 2015-05-14T23:27:06Z 2015-05-14T23:27:06Z 2010-03-06
dc.identifier.citation 2010 IEEE Aerospace Conference, Big Sky, Montana, March 6-13, 2010 en_US
dc.identifier.clearanceno 12-5711
dc.description.abstract This paper addresses the issue of cross-polarized field components of an array of antennas as compared to that of individual elements of the array. For a single antenna, the co- and cross-polarization components are completely correlated in terms of phase and amplitude in a given direction. The co/cross-pol relations vary as a function of angular position from peak of the beam, which is important when there is pointing error. More specifically, for the reflector antennas, this relation might vary as the antenna points in different directions in azimuth and elevation, due to the changes in gravity profile, wind effects, temperature changes, etc., on the surface and feed/sub/main reflector alignment. In an array environment, these changes will vary among various antennas in the array, and indeed very small mechanical and design variations in the antenna elements (in terms of feed horns, feed/reflector misalignments, surface variations, etc., will contribute to the cross polarization variations. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2010 en_US
dc.subject polarization en_US
dc.subject cross polarization en_US
dc.title A study of cross polarization effects in reflector antenna arrays en_US
dc.type Preprint en_US

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