The Charles Stark Draper Laboratory, Inc.

Bradley A Moran

Robert D Tingley

Adam J Greenbaum

A space-based phased antenna array provides one- or two-dimensional beam steering, yet is compact upon launch and does not require gravity to maintain its shape or orientation. An exemplary antenna array includes a central satellite and at least three peripheral satellites. Each peripheral satellite is mechanically connected to the central satellite by an extendible tether. At launch, the tethers are retracted, so the peripheral satellites are close to, or within, the central satellite. Once in position, the central satellite rotates and extends the tethers, thereby deploying the peripheral satellites in a planar radial pattern. Multiple antenna elements, some disposed on each tether, collectively form a planar phased array that can be electronically beam steered in two dimensions. The antenna array may relay signals, such as between local companion satellites or planet-based stations, and earth. Linear versions, with as few as two tethered satellites, are beam steerable in one dimension.

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Concord, MA, United States of America

Bradley A Moran