The Design of 220GHz Four-way Power Divider Based on E-plane Directional Waveguide Hybrid

This paper designs a four-way power divider based on 3dB E-plane waveguide hybrid coupler at center frequency 220GHz. By using bend waveguide cascade the hybrid, the return loss of designed power divider can be better than 21dB over 203GHz −235GHz, while the amplitude imbalance can be less than 0.2dB and relative bandwidth can reach more than 13.6 %. The power divider achieves a good result of equal power distribution and can meet the requirements of terahertz communication and imaging applications.