Beam switching antenna

In this paper is showing about Beam Switching Antenna that able to shift the antenna direction by using four microstrip antenna and aluminum. The antenna is using FR-4 and the saiz is 40mm × 78 mm. By using aluminum it able increase the gain from 5.269 dB to 8.128 dB while the directivity is from 7.126 dBi to 11.09 dBi. With this antenna it able to control the direction of the radiation pattern up to four location.