It is a device that divides the energy of one input signal into two or more outputs of equal or unequal energy, and can also combine the energy of multiple signals into one output. This can also be called a combiner. A certain degree of isolation should be ensured between the output ports of a power splitter. The splitter is usually divided into two points (one input and two outputs), one minute three (one input three outputs), etc.
A certain degree of isolation should be ensured between the output ports of a power splitter. The power splitter is also called an overcurrent splitter. It is divided into active and passive. It can evenly distribute one signal into several outputs. Generally, there are several dB attenuations per minute, the signal frequency is different, and the different attenuation of the splitter is also Differently, in order to compensate for the attenuation, a passive power splitter is made after the amplifier is added.

The energy loss of the wireless signal after the two-power split is 10log2=3dB, plus the dielectric loss of the passive device itself is 0.5dB, and the insertion loss of the two-power split is generally 3.5dB.

The WLAN room sub-network generally uses a microstrip power splitter, which is small in power and low in cost relative to the cavity splitter.

