Abstract

In this paper, a serrated microstrip lines tri-stage Wilkinson power divider is described. The designed power divider is composed of a serrated microstrip line branch with excellent transfer chracteristic and three isolation resisters with good isolation performance in a great wideband. To demanstrate its performance, the proposed Wilkinson power divider has been fabricated and measured. Results show that the measured insertion loss is less than 0.85dB, the output reflection 14 dB, the input reflection and the isolation is better than 14dB, 11dB, 10dB, respectively, in the frequency range from 2GHz to 18GHz.

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