A high-efficiency electronically-scanned K-band phased array for spaceborne radiometric applications

The development of a small, lightweight, electronically scanned passive phased array suitable for use in spaceborne or airborne systems is considered. Conventional edge-slotted traveling-wave linear elements are assembled into a planar array, the beam of which is scanned in one dimension by Reggia-Spencer type ferrite phase shifting elements. The array has been mated with a microwave radiometric receiver and used to make airborne radiometric images of the earth.