UHF Band Compact Range Feed Antenna with Compact Size

In this paper, a compact range feed antenna with compact size in UHF band is proposed, which uses multi-feed excitations to achieve axial dimension compression. The feed antenna can work from 300MHz to 800MHz, the radiation pattern has good symmetrical performance and low sidelobes, the E-plane and H-plane patterns have good consistency and low cross-polarization. The axial dimension of the final designed feed antenna is 0.3 λ at the lowest operating frequency, the VSWR is less than 2.64 in the operating frequency range, and the 3dB beam width of the pattern varies from 40° to 85°.