Abstract:A novel planar circular reconfigurable antenna with six switchable lobe patterns is proposed. The antenna was fabricated on a FR4 epoxy substrate with radius of 60 mm and relative dielectric constant of 4.4, and has a compact structure located symmetrically in xoy plane. The proposed antenna is of low profile, low cost and small volume, and has an available impedance bandwidth of 2.35~2.51 GHz, which can be applied in the systems of Wibro, Bluetooth, ZigBee and wireless local area networks (WLAN). By changing the connections between the radiators and feed, six reconfigurable lobe patterns are achieved. Combining rapid switchable control system of switches, the patterns can be scanned in xoy plane. Meanwhile, a good agreement between measured and expected results is obtained.