A power divider with tunable power

In this paper, a power divider is proposed. The presented divider consists four varactors and two microstrip lines. The divider has four ports, port 1, port 2, port 3 and port 4. Port 1 is the input port, and port 3, 4 are output ports. Besides, port 2 is the isolated port. When the capacitance of the four varactors is 0, the power is outputted in port 4. When the capacitance of the four varactors is 1 pF, the power is outputted in port 3. Therefore, a tunable power divider is achieved by adjusting the capacitance of the four varactors.