High-gain dielectric antenna using air cavity radiation

The invention discloses a high-gain dielectric antenna utilizing air cavity radiation, which comprises a substrate and a radiation part, a floor is arranged on the upper surface of the substrate, the radiation part comprises a plurality of radiation dielectric blocks positioned on the surface of the floor, and air cavities are formed among the plurality of radiation dielectric blocks; a plurality of coupling structures are arranged on the surface of the floor and extend upwards in a manner of being attached to the radiation medium block; and a plurality of coaxial feed structures correspondingly connected with the plurality of coupling structures are arranged at the bottom of the substrate. The high gain performance is realized by utilizing a differential feed mode and combining radiation of the air cavity and the dielectric antenna, the structure is simple, the practicability is high, the plane size of the whole dielectric antenna is quite small, the loss in a high-frequency working frequency band is relativ