Design of A Four-Channel Crossover in Ridge- Gap-Waveguide Technology for Millimeter-Wave Applications

In this paper, a novel four-channel crossover is proposed utilizing ridge-gap-waveguide (RGW) technology, which can address the crossing of four channels simultaneously. The RGW structure employs air as the medium, contributing to low dielectric loss. The simulated results display that the minimum insertion loss is 0.52dB, the reflection and isolation coefficients are less than −15dB from 27.8 GHz to 28.3 GHz with 28 GHz as the center frequency.