DocumentCode :
1261688
Title :
Low-sidelobe reflector synthesis and design using resistive surfaces
Author :
Jenn, David C. ; Rusch, Willard V T
Author_Institution :
Dept. of Electr. & Comput. Eng., US Naval Postgraduate Sch., Monterey, CA, USA
Volume :
39
Issue :
9
fYear :
1991
fDate :
9/1/1991 12:00:00 AM
Firstpage :
1372
Lastpage :
1375
Abstract :
A procedure is presented for determining the resistivity of a paraboloid´s reflecting surface to obtain a desired sidelobe level. The only requirement is that the normalized aperture distribution due to the feed be greater than the corresponding normalized low sidelobe distribution at every point on the reflector (i.e. the reflection coefficient of the surface ⩽1). In the synthesis procedure, blockage is ignored and an ideal feed is assumed. In spite of this, computation of the secondary radiation patterns of a resistively corrected antenna including the feed using the method of moments shows that a -40-dB sidelobe level is achievable. In principal, there is no limit to the sidelobe reduction for the field scattered from the reflector. In practice, blockage, feed illumination errors, errors in the surface resistivity, and the feed backlobe will limit the sidelobe level
Keywords :
antenna radiation patterns; reflector antennas; design; low sidelobe level; method of moments; reflector antenna; resistive surfaces; secondary radiation patterns; synthesis procedure; Antenna feeds; Apertures; Conductivity; Geometrical optics; Lighting; Optical reflection; Optical scattering; Phased arrays; Radar antennas; Shape;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/8.99046
Filename :
99046
Link To Document :
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