Abstract: Disclosed is a cross-type directional coupler including: a ground plate electrically connected to a reference potential; first and second transmission lines disposed to face each other to be electromagnetically coupled by alternately crossing at a position spaced apart from the ground plate by a first distance in one direction and at a position spaced apart from the ground plate by a second distance greater than the first distance; and a dielectric having a predetermined dielectric constant and disposed between each of the first and second transmission lines and the ground plate to support each of the first transmission line, the second transmission line, and the ground plate. Accordingly, the directional coupler according to the present invention may have substantially identical impedance and excellent coupling characteristics and isolation, while reducing a thickness and a mounting space of the device and being usable at a lower frequency.