RF connectors (radio frequency connectors) are electrical connectors that can work at radio frequencies that are in the multi-megahertz range. Coaxial cables are typically used with RF connectors because they maintain the shielding provided by the coaxial design. As a result of better models, signal reflection and power loss are reduced by minimizing the change in transmission line impedance at the connection.RF connectors are used for TV receivers, WIFI devices, measurement equipment, automobile with antennas, including type N connector, BNC, SMA, SMB, SMC, TNC, RCA, MCX connectors. 50 Ohms or 75Ohms.
For example, SMA connectors is a kind of coaxial connector with small screw thread. It has the characteristics of wide frequency band, excellent performance, high reliability and long life. The SMA connector is used to connect the RF cable or microstrip line in the RF loop of microwave equipment and digital communication system. On wireless devices, it is usually used for the GPS clock interface on the board and the test port of the base station RADIO frequency module. It supports signal frequencies ranging from DC to 18GHz, and some types can support up to 26.5ghz.
5 Types of RF Connectors
SMA connectors are semi-precision coaxial RF connectors operating up to 18 GHz, though some proprietary versions are rated to 26.5 GHz. RF power amplifiers, RF isolators, microwave systems, mobile telephone antennas, WiFi antenna systems, and radio astronomy all use it at 5 GHz+.
The SMB connector, a coaxial RF connector developed in the 1960s, features a snap-on coupling and comes with 50 or 75 k impedances. They are smaller than SMA connectors. SMB connectors are ideal for applications requiring a quick mating sub-miniature RF connector at frequencies up to a few GHz, since they offer excellent electrical performance from DC to 4 GHz. SMB connectors are referred to as Sub-Miniature version B connectors, which gives them their name.
SMC connectors are coaxial RF connectors developed in the 1960s. MIL-STD-348 provides interface specifications for the SMC and many other connectors. They use a threaded interface with a thread size of #10-32 UNF. They offer electrical performance from DC up to 10 GHz. The center contact is held by a socket on male (a.k.a. plug) SMC connectors, whereas the center contact is held by a pin on female (a.k.a. jack) SMC connectors.
BNC is a miniature quick connect/disconnect RF connector commonly used at low frequency applications. It is originally used for the military sector and has gained wide acceptance in composite video on commercially used video devices and RF applications up to 2 GHz.
MCX connectors are coaxial RF connectors that are similar to micro-miniature coaxial connectors but smaller. They comply with the European CECC 22000 specification. MMCX connectors are rated to 500 mating cycles. They have a lock-snap mechanism allowing 360-degree rotation and usually have a 50 Ω impedance. They offer broadband capability from DC to 6 GHz.
MMCX connectors are used on Wi-Fi PCMCIA cards as antenna connectors or as connectors for external GPS antennas on small devices like PDAs or GPS receivers, or on mobile phones to connect external GSM antennas. In-ear monitors also use them to connect cables to individual earpieces.
There are a lot of best custom RF connectors available out there that vary in shape, size, and frequency range used for a wide variety of applications. All you have to do is to select according to specification required for a particular application. If you're looking for RF connectors, visit https://www.mococonnectors.com, a leading rf connector manufacturer , factory & supplier.