Abstract: A communication device configured to form a plurality of beams for a plurality of beam IDs and communicate by radio with a terminal located on a site, includes a storage unit that stores therein beam control information related to a beam width of each of the plurality of beams radiated for each of the beam IDs from an antenna; and a beam controller configured to perform beam control by the beam width for each of the beam IDs, based on the beam control information.

Abstract: A group delay compensation filter includes: a waveguide that has a first slot and that is configured to transmit a signal; and a first dielectric resonator that includes: a first dielectric, a first metal layer formed over a surface of the first dielectric, and a first opening provided in the first metal layer, wherein the first dielectric resonator is in contact with the waveguide with the first opening coupled to the first slot, and wherein the first dielectric resonator is configured to compensate group delay in a first frequency band of the signal.

Abstract: A wireless communication module includes a horn antenna and a semiconductor chip, and the horn antenna and the semiconductor chip are integrally formed by a mold resin and are connected through a transmission line. The horn antenna includes an open end provided on a longitudinal end face of the wireless communication module; an antenna conversion unit located on an opposite side of the open end and connected with the semiconductor chip through the transmission line; and a side face part whose shape is varied in a thickness direction of the wireless communication module in a manner such that an opening area is widened from the antenna conversion unit toward the open end.

Abstract: A group delay compensation filter includes: a waveguide that has a first slot and that is configured to transmit a signal; and a first dielectric resonator that includes: a first dielectric, a first metal layer formed over a surface of the first dielectric, and a first opening provided in the first metal layer, wherein the first dielectric resonator is in contact with the waveguide with the first opening coupled to the first slot, and wherein the first dielectric resonator is configured to compensate group delay in a first frequency band of the signal.

Abstract: A wireless communication module includes a horn antenna and a semiconductor chip, and the horn antenna and the semiconductor chip are integrally formed by a mold resin and are connected through a transmission line. The horn antenna includes an open end provided on a longitudinal end face of the wireless communication module; an antenna conversion unit located on an opposite side of the open end and connected with the semiconductor chip through the transmission line; and a side face part whose shape is varied in a thickness direction of the wireless communication module in a manner such that an opening area is widened from the antenna conversion unit toward the open end.