Coaxial radio-frequency connectors (RF connectors) are electrical connectors designed to work at radio frequencies in the MHz range. RF connectors are commonly used with coaxial cables and are designed to maintain the shielding provided by coaxial designs. A better model can minimize changes in the impedance of transmission lines at connections. Mechanically, they provide fastening mechanisms (thread, bayonet, bracket, blind fitting) and springs for low ohmic electrical contact, while retaining gold surfaces, allowing for very high matching cycles and reducing insertion forces. Research activities in RF (RF) Circuit Design soared in the 2000s and responded directly Meet the huge market demand for cheap, high data rate wireless transceiver.