Conformal microstrip circularly polarization Antenna array

In this paper, the conical conformal antenna array is proposed, which employs a feeding network and three double feed square circularly polarization patches. Good agreement between the theoretical and experimental results is obtained. Its measured 3dB axial ratio bandwidth is about 270MHz, covering 1.37GHz-1.64GHz.The measured radiation pattern of antenna is also presented, which is almost onmidirectional.