Broadband low-loss power splitter based on ferrite cores

A broadband 3-dB power splitter based on ferrite cores is proposed for RF communication systems. This power splitter is developed from the transformer-type Wilkinson power splitter, where lumped components are detailed designed to achieve excellent input and output impedance match in an ultra-wide bandwidth (300 kHz-400 MHz). The power splitter demonstrates better RF characteristics in comparison with former designs. The voltage standing wave ratios of the input and output ports are < 1.2, the isolation between two output ports is > 20 dB, the amplitude imbalance is < 0.04 dB, and the insertion loss is < 0.5 dB. Such power splitters have small dimensions and very low costs.