Abstract
A broadband CP antenna for wireless communication is presented and experimentally investigated in this communication. The proposed antenna consists of a triangle shape radiator connected with 500 microstrip feed line. The antenna has achieved measured impedance bandwidth of 1.03 GHz (1.68-2.71 GHz) and 1.43 GHz (3.27-4.7 GHz) with 3dB axial bandwidth of 230 MHz (2.51-2.74 GHz). The electric dimension of the proposed antenna is 0.26 lambda x 0.21 lambda x 0.01 lambda, at lower frequency. Moreover, the antenna has shown a stable radiation pattern with good antenna performances. The performance has been studied with different substrate materials. In addition, the Specific Absorption Rate (SAR) analysis has been investigated for the proposed antenna.