Design and simulation of power divider/combiner on wafer in W-band

In this paper, a 110GHz power divider/combiner based on microstrip branch-line hybrid is proposed, which can form a power splitting/combining network. This quadrature hybrid has the properties of low loss, equal power splitting, mature microstripprocessing technology, especially can be tested on chip. In the whole band(105GHz~115GHz), the 3D EM simulation results show that the return loss is less than-19.78dB (-34.49dB at 110GHz); between the outputs, the magnitude difference is less than 0.05, while the phase difference is less than 0.3°, also the output isolation is more than 19.94dB (35.06dB at 110GHz). Integrated with MMIC power amplifiers, this divider/combiner can be widely used in W band power combining systems.