A series and parallel hybrid unequal power divider feeding network based on ridge gap waveguide

This paper proposes an unequal power divider feeding network working at 94GHz. It is based on the ridge gap waveguide technology for millimeter-wave radar applications and using a series and parallel hybrid feeding network. This feeding network is composed of T-junction and Y-junction unequal power dividers. Adjustable pins and large power ratio dividers improve phase consistency and amplitude-tapering flexibility. The reflection coefficient is below −15 dB from 92.4 GHz to 96 GHz. For a frequency of 94 GHz, the proposed model achieves the reflection coefficient of − 26.25 dB.