A new technique is presented demonstrating the use of switched parasit
ic elements in electronic beam steering applications. Experimental and
theoretical results are presented for a linearly polarised five eleme
nt steerable patch antenna array operating at 1.55 GHz, Shorted parasi
tic elements have been used to steer the beam in two directions for tr
acking polar orbiting satellites, The minimum gain of the system for e
levation angles >20 degrees above the horizon is -1.5 dBi in the forwa
rd direction.