Summary of Radiation Pattern Measurements Using the LES-7 Lens and Variable Power Dividing (VPD) Feed Network at 7.68 GHz
MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
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A comparison between experimental and calculated radiation pattern data for a multiple-beam antenna is presented. The antenna consists of a waveguide lens aperture excited by a 19-element feed horn array and variable beam-forming network. The pattern data presented varies from a narrow high-gain beam, equivalent to that of a steerable paraboloid, to the earth-coverage pattern of a wide coverage communication satellite. Also discussed are the results of the earth-coverage measurements when either one or two feeds are turned off so as to produce nulls in the earth-coverage pattern.
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