Waveguide slot antenna array

The embodiment of the invention discloses a waveguide slot antenna array which comprises an array unit and a rectangular compact waveguide, the width of the top wall of an array unit body is larger than the width of the side wall of the array unit body, two radiation slots are symmetrically designed at the central axis of the top wall of the array unit, and a waveguide side ridge is arranged at the central position of the side wall of the array unit. A coaxial line used for feeding is connected to the central position from the bottom of the array unit, an internal conductor of the coaxial line is connected with the waveguide side ridge, and impedance is adjusted through a step-shaped balun. According to the antenna array, compact ridge waveguides with ridges on narrow sides and slots on wide sides are used as array units, and a coaxial line is used for center feeding. The waveguide slot antenna array provided by the invention is low in profile, narrow in unit spacing and large in working bandwidth. 本公开实施例公开了一