Dual Circularly Polarized Horn Antenna with Bandwidth Enhancement by Truncated Horn and Linear Tapered Curve

Dual Circularly polarized (CP) Pyramidal horn antenna has been designed for high data rate transmission in both C-Band and X-band. The ultra-wide band and dual CP performance has been achieved using linear tapered curve in waveguide region and truncated structure in the horn of proposed horn antenna. The proposed antenna has been simulated by electromagnetic computational tool CST. An impedance bandwidth (IBW) of 84.7% (4.6GHz-11.3GHz) and maximum gain of 20.16 dBi has been achieved in this design. Dual CP has been operated in 4.04-4.67 GHz (14% ARBW) and 5.081-5.81GHz (13.5% ARBW).