Dipole antenna, polarized wave common antenna, and array antenna

Provided are a dipole antenna, a polarized wave common antenna, and an array antenna that are suitable for a multilayer substrate or other three-dimensional circuit configuration in a high-frequency band of 28 GHz or more or in a standard high-frequency band. A dipole antenna, a polarized wave common antenna, and an array antenna each have an antenna section provided on a dielectric layer, and a pseudo coaxial line formed on the dielectric layer and connected to the antenna section, the pseudo coaxial line having an outer conductor and a signal line. 本发明提供适合于在28GHz频带以上或以其为标准的高频频带中的多层基板或其他立体电路的结构的偶极子天线、极化波共用天线以及阵列天线。偶极子天线、极化波共用天线以及阵列天线具有设置于电介质层上的天线部，具备形成于电介质层并与所述天线部连接的伪同轴线路，伪同轴线路具有外导体以及信号线。