Abstract
We present and analyze a hardware-optimized technique that provides true-time-delay steering for broadband two-dimensional array-antenna applications. The technique improves on previous approaches by the reduction of the two-dimensional beam-former architecture complexity, by the provision of flexibility in time-delay unit selection, and by the potential reduction of optical loss. The technique relies on a one-dimensional bank of time-delay units to form the required time-delay gradient for proper off-broadside angle steering. A reconfigurable optical interconnection fabric is used to reassign dynamically the connections between the time-delay units and individual array elements of a two-dimensional array to effect the proper steering angle along the off-broadside cone.
© 1997 Optical Society of America
Full Article | PDF ArticleMore Like This
Nabeel A. Riza and Nicholas Madamopoulos
Appl. Opt. 36(5) 983-996 (1997)
Mario N. Armenise, Vittorio M. N. Passaro, and Giuseppe Noviello
Appl. Opt. 33(26) 6194-6209 (1994)
Akis Goutzoulis, Ken Davies, John Zomp, Peter Hrycak, and Andy Johnson
Appl. Opt. 33(35) 8173-8185 (1994)