The design, fabrication, and test of a multiple beam millimeter wave airborne imaging system is presented. As a prototype for eventual civilian applications, this system will serve to gather background data on many environmental and topographic features of the earth and its atmosphere.
Future spaceborne millimeter and sub-millimeter wave sensing systems will require the sensitivity and resolution only achievable with large focal plane array receiving systems. A technique has been developed for the low cost fabrication of large arrays of millimeter and sub-millimeter wave corrugated feed horns. These arrayed horns exhibit high efficiency and symmetrical receiving patterns and are compatible with integrated receivers. W-band test results of a 3X3 array are presented.
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