On the size reduction of planar Yagi-Uda antenna using parabolic reflector

A planar Yagi-Uda antenna using the parabolic reflector is designed and compared to that of using the conventional straight reflector. Both antennas are designed to have the same performance. Simulation results show that the parabolic reflector design can reduce the occupied antenna area by about 29.4% as compared to that of the straight reflector design, while the antenna directivity and efficiency are retained at 7.16 dBi and −0.70 dB, respectively. Thus the parabolic reflector design is suitable for designing compact directive antennas in the low-profile devices.