Coaxial adapters are used to transmit RF signals with a wide transmission frequency range of 50 GHz or higher, primarily for radar, communications, data transmission, and aerospace equipment. The basic structure of the coaxial adapter includes: a center conductor, a dielectric material (or insulator), and an outer conductor (which acts like a shield on the outer side of the coaxial cable). Coaxial adapters are mainly divided into SMA, SMB, N type, 3.5MM, 2.4MM, 1.85MM, 1.0MM, APC-7MM, etc.
