A latching millimeter-wave T-circulator utilizing a single ferrite located inside the waveguide structure

A latching T-circulator utilizing a bulk ferrite located inside the waveguide T-structure was fabricated and tested at a wavelength of 8 mm. Circuit arrangements for efficient testing are presented. The reverse attenuation and the reverse-to-forward attenuation ratio are approximately 20 dB and 13, respectively, at the present stage.