An apparatus capable of tracking a target, comprising at least one
near-field focused antenna comprising an array of elements and a phase
shifter to form multiple fixed beams in the near-field, a sensor capable
of sensing the location of the target, and a controller capable of
accepting position information and capable of activating the proper fixed
beam along a course so as to enable the near-field focused beams to track
the target. The array of elements may be substantially linear and the
sensor may be optical, mechanical, thermal, or sonic position detection
subsystems.