100-3000MHz RF Bias Tee, N Male to N Female Connector
Bias tees are the components, that are used to supply DC currents or voltages to bias RF circuits. A Bias tee is a three-port device. A signal that consists of RF + DC is incident at one port and the capacitor blocks all DC signals from getting through to another port and only allows the AC/RF Signals to pass through. Whereas, the inductor in the circuit blocks all RF signals from getting through to the final port and allows all DC signals to get through.
A Bias Tee can be thought of as a diplexer with an ideal capacitor that allows AC through but blocks the DC bias and an ideal inductor that blocks AC but allows DC.