Development of A Miniaturized Wideband 16-Way Power Divider Using Loaded Spurlines

Abstract

A New wideband Wilkinson 16-way power divider on microstrip line operating at X-band(8-12GHz) using loaded slow-wave structure of spurline to accomplish miniaturization is presented in this paper.The equations used for the 2-way power divider unit loaded with symmetrical single-spurline structures are based on the concept of spurline and odd-even modes using transmission line analysis.Then the 2-way power divider in X-band is cascaded to design 16-way power divider, while every cascade transmission line is loaded with symmetrical-spurline structure.The designed 16-way power divider has compact size of 197 mm × 55.1 mm × 6.808 mm including cavity and provides good impedence matching at all ports.Its return loss is better than 12.98dB, insertion loss is less than 15.1dB and isolation is better than 15dB across the 8 to 12GHz range, which is in good agreement with the simulation results.