BMA connector is an ultra-small blind-plug sliding type RF coaxial connector. By using blind mating, even if there is a slight misalignment, the plug can be pressed into the socket with sufficient pressure to achieve mating. Subsequently, the internal mechanical mechanism ensures a firm electrical connection and correct alignment. In terms of structural dimensions, it is SMA series. The interface adopts air interface, which is small in size. The shell is usually made of stainless steel or passivated stainless steel. The inner conductor is beryllium copper with gold plating, and the dielectric material is PTFE. It is widely used in the connection of various microwave circuits, especially suitable for blind insertion in chassis and cabinets, which is conducive to the modularization of the entire machine system such as radar. It is also often used in high-speed high-density panels and backplanes, high-speed digital signal systems, etc.