Directive Beam Radiation by A Fresnel Zone Plate Integrated Partially Reflective Surface for Millimeter-wave applications

This paper introduces a high gain Fabry Perot cavity (FPC) antenna for millimeter-wave applications. By employing a Fresnel Zone Plate (FZP) integrated Partially reflective surface (PRS), 4 dB gain enhancement is realized. The proposed antenna consists of an SIW based feeding source, a quasi-curve reflector and the proposed FZP integrated PRS. All parts of the proposed antenna can be implemented by low-cost and mature printed-circuit-board (PCB) technology, which is convenient in circuitry integration. For validation, a prototype of 60 GHz FPC antenna is designed and measured. It yields a measured impedance bandwidth of 17.8% and a 3-dB gain bandwidth of 13.3 %. The measured peak gain is 21 dBi at broadside direction. The proposed antenna finds potential applications in 5G communications.