Miniaturized Wilkinson Power Divider Based on Capacitive Loading and Coupled Microstrip Line

This paper introduces a miniaturized Wilkinson power divider with an operating frequency of 10 GHz. In this design, the parasitic effect caused by the mutual coupling between the 1/4 lambda impedance converters of the traditional Wilkinson power divider is used to reduce the length of the impedance converter, so as to reduce the size of the power divider; At the same time, open circuit analog grounding capacitors are loaded on the input port and output port respectively to improve the reflection coefficient of the output port and eliminate the influence of coupling on the isolation between the output ports; A resistor is added between the two output ports to achieve good isolation. Experiments show that this structure can obtain good performance at the working frequency. At the same time, it has compact structure, small circuit size and easy integration with other circuits.