Design and fabrication of an eight-port binary Wilkinson power splitter

Abstract

An eight-port X-band power splitter based on binary Wilkinson power splitter topology is presented in thispaper. The proposed power splitter consists of three stages, with one, two, and four equal power splitters in the first,second, and third stages, respectively. The input power is divided equally between the eight outputs to provide anequal-split power splitter. Evaluation of the structure is carried out using even- and odd-mode techniques. An epoxylaminate FR4 substrate with thickness of 0.5 mm is chosen, while the designed power splitter is simulated using KeysightAdvanced Design System 2019 and ANSYS High Frequency Structure Simulation. As the results indicate, excellentperformance is obtained for the power splitter, with a reflection coefficient of –36.5 dB and an insertion loss of –9.32 dBat the 9.65 GHz center frequency. The proposed power splitter has the potential to be employed in radar and microwavesystems, specifically in phased-array structures.