The N connector was developed as early as the 1940s for military applications in the frequency range up to 5 GHz. The designation "N" is therefore said to be derived from Navy, but there are also other interpretations that cite the name of the developer Paul Neill of Bell Labs. In the 1960s, the N connector was improved and could be used in the frequency range up to 12 GHz, later even up to 18 GHz. Its impedance is 50 ohms, but there is a version with a thinner inner pin and an impedance of 75 ohms.
The N-connector has a screw or twist lock. Due to this screw connection and the double shielding, the N connector has a high RF tightness and is particularly protected against interference radiation, against emissions and splash water. The N-connectors can be crimped or soldered. The N connector is used as an antenna connector in WLANs.