A Simple Robust Equal-Split T-Junction Power Divider at Three Frequencies

Abstract

This paper presents a novel design of a tri-band equal-split T-junction power divider incorporating a new concept of impedance matching using a common frequency. The power divider hence designed is able to divide power equally between the two output ports at three desired frequencies of interest- 900MHz (GSM downlink), 1.8GHz (GSM uplink) and 3.5GHz (WiMAX and 5G communication under testing). An FR4 prototype, fabricated based on the theoretical formulations, shows a good agreement between the simulated and measured results.