다이폴 루프 결합형 빔 조향 안테나

In this paper, we propose a reconfigurable beam steering antenna using a dipole and a loop. The radiation patterns of the two antennas were cancelled or compensated, and head for the specific direction when a dipole and a loop antenna are combined at the reasonable ratio. The structure of the antenna is very simple and planar. By changing on/ off states of switches, the proposed antenna can steer the beam direction in the x-y plane. Simulation results confirmed the steering characteristic by using two imaginary switches. The proposed antenna can change the direction of the maximum gain in the x-y plane(0°, ±50°). The proposed antenna operates in 2.5～2.56 GHz(VSWR<2). It showed that peak gain of the antenna is 1.96～2.48 dBi and overall beam width of the reconfigurable antenna covers about 125°.