A RHCP Microstrip Antenna with Ultrawide Beamwidth for UHF Band Application

الملخص EN

A novel right-hand circularly polarized (RHCP) UHF microstrip antenna with 3 dB beamwidth of more than 150° is presented in this paper.

The 3 dB RHCP beamwidth can be broadened by utilizing a combined ground structure with a hollow truncated cone ground plane and a metallic rectangular plate.

Optimizing the half-angle θ c of cone and the cone height h cone , a 3 dB RHCP beamwidth of more than 200° can be acquired, which is about 120° greater than its corresponding regular RHCP microstrip antenna.

There is a good agreement between the measured results and simulated results for the proposed antenna operating in UHF band.