Electronically steerable parasitic radiator antenna and beam forming apparatus

摘要

Provided are an electronically steerable parasitic radiator antenna and a beam forming apparatus. The ESPAR antenna includes: an active patch radiator disposed at the center of one surface of a substrate to radiate a beam corresponding to a signal applied through a feeding line; a plurality of parasitic patch elements disposed to have a predetermined angle in different directions, respectively based on a central position of the active patch radiator to derive the beam radiated by the active patch radiator in a predetermined direction; and a reactance element disposed between the active patch radiator and the plurality of parasitic patch elements to determine a direction of the beam radiated by the active patch radiator.