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A deformable mirror-based optical beamforming system for phased array antennas

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3 Author(s)
Toughlian, E.N. ; Rome Air Dev. Center, Griffiss AFB, NY, USA ; Zmuda, H. ; Kornreich, Philipp

Microwave carrier generation along with the signal processing required for dynamic beamsteering of a high-resolution phased array antenna with an arbitrary radiation pattern is accomplished using optical components. It is shown that a deformable mirror type spatial light modulator can establish a truly arbitrary continuous optical phasefront which is directly converted to spatial RF phase information by an optical heterodyne system. Experimental results simulating the performance of the actual system are presented. A spatially integrated optical implementation providing mechanical stability and essentially eliminating the drift problems usually encountered in free space systems is presented.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:2 ,  Issue: 6 )