A power divider is a radio frequency/microwave device that distributes the input signal power to multiple output ports in a certain proportion. It is widely used in wireless communications, radar, electronic countermeasures and other fields. The following is a detailed introduction to the power divider:

Working principle:

The basic principle of the power divider is based on transmission line theory and microwave network theory. Taking the common microstrip power divider as an example, it consists of an input transmission line, a branch transmission line and an output transmission line. When the input signal enters the power divider, the signal power is distributed to each output port through a specific circuit structure (such as T-junction, Wilkinson structure, etc.). In the Wilkinson power divider, in addition to the basic power distribution structure, isolation resistors are added between the branch lines to achieve good isolation between the output ports and prevent signals from crosstalking between the output ports.