Ceiling antenna

A ceiling antenna, wherein the ceiling antenna comprises:

• a reflecting bottom plate, wherein the reflecting bottom plate has a via hole;
• a supporting plate, wherein the supporting plate is fixed to the reflecting bottom plate, and a plane where the supporting plate is located is perpendicular to a plane where the reflecting bottom plate is located;
• a radiation oscillator, wherein the radiation oscillator is adhered to the supporting plate, the radiation oscillator comprises a substrate and a first radiator located on the substrate, the first radiator has a grid-line-like structure, the substrate is located between the supporting plate and the first radiator, a material of the substrate is a light transmitting insulative material, a thickness of the first radiator in a direction perpendicular to the substrate is configured to be less than a line width of grid lines of the first radiator, and a shape of an outer contour of the first radiator is a rectangle having at least one cut corner;
• and
• a connector, wherein the connector is located on one side of the reflecting bottom plate that is away from the radiation oscillator, the via hole exposes a part of area of the connector, and the connector is electrically connected to the radiation oscillator through the via hole;
• wherein the radiation oscillator further comprises at least one second radiator located on the substrate, the second radiator is connected to the first radiator, and the second radiator has a same grid-line-like structure as the grid-line-like structure of the first radiator;
• wherein the second radiator is provided on one side of the first radiator that is farther from the at least one cut corner, and an area of an orthographic projection of the second radiator on the supporting plate is less than an area of an orthographic projection of the first radiator on the supporting plate.