Design and implementation of a bandpass Wilkinson power divider with wide bandwidth and harmonic suppression

Abstract

In this paper a Wilkinson power divider (WPD) is presented with ultrawide-band operation and harmonicsuppression. This WPD is designed using coupling lines and meandered open stubs at main branches. The centerfrequency of the presented WPD is 4.25 GHz, which is fabricated and measured on RT/Duroid substrate with dielectricconstant of 2.2. The proposed WPD provides good filtering band with high attenuation level. The 15 dB return lossoperational bandwidth (BW) of the WPD is obtained between 3.2 GHz and 5.3 GHz, which shows 50% operationalbandwidth.