The article deal with linear waveguide-slot antenna based on rectangular waveguide integrated into the substrate printed circuit board (substrate integrated waveguide) and intended for use in a circular array with one-dimensional scanning. Antenna design is a multilayer printed circuit board of the microwave dielectrics in which the top and bottom metal layers play the role of wide wall of waveguide, and the narrow wall of wave-guide is formed by a series of metalized pins.