Dielectric-filled horn antenna and communication system

The invention relates to the technical field of antennas, and discloses a medium-filled horn antenna and a communication system, and the medium-filled horn antenna comprises a choke groove horn and a transmission structure. The cavity of the choke groove horn is connected with the transmission structure and is used for receiving or transmitting electromagnetic waves; a filling medium is arranged in a cavity of the choke groove horn and extends into the transmission structure, and the dielectric constant of the filling medium is larger than that of the cavity. By arranging the filling medium with the dielectric constant larger than the dielectric constant of the cavity in the cavity of the choke groove horn, the cut-off frequency for receiving or transmitting electromagnetic waves can be reduced, so that the wave beam angle can still be increased when the antenna radiation aperture cannot be reduced, and the wave beam angle can meet the requirement. 本发明涉及天线技术领域，公开了一种介质填充喇叭天线及通信系统，该介质填充喇叭天线包括：扼流槽喇叭以及传输结构；扼流槽喇叭的