A high isolated planar Magic-T was presented which was appropriate for MIC.This structure belonged to a novel 180°planar hybrids configuration.It was designed based on the traditional principle of microstrip hybrid ring and introduces microstrip-slotline tee junction.The 180°phase shift of the two ports was realized by the transition of microstrip-slotline which the isolation of output ports was realized.A multisection impedance transformation network was used to increase the operating bandwidth and minimiz...