A Novel Ultra - Broadband Rotated Cross Monopole Antenna for Wireless Communication

A novel broadband planar rotated cross monopole antenna, which consists of a vertical patch (area A) and a rotated horizontal patch (area B), is proposed. By rotating the horizontal patch, the bandwidth of the proposed antenna can be signiflcantly enhanced. The efiect of the rotated angle of the horizontal patch on the bandwidth has been deeply studied. The measured results show that the proposed antenna with compact size of 50 £ 50mm 2 can achieve a wide impedance bandwidth (10-dB re∞ection coe-cient) as large as 8.76GHz (2.33{11.09GHz) or about 130%, which is nearly two times of what the corresponding conventional cross monopole antenna was.