The invention discloses a substrate integrated
waveguide ferrite switch which is good in allowance, wide in
broadband and relatively high in isolation. The substrate integrated
waveguide ferrite switch comprises a medium substrate, wherein the upper surface of the medium substrate is provided with a first
metal copper-coated layer, the lower surface of the medium substrate is provided with a second
metal copper-coated layer, the medium substrate is provided with two rows of metallization through holes which are parallel to each other, the first
metal copper-coated layer is provided with at least one first ferrite installation hole, a ferrite block is arranged in the first ferrite installation hole, and the upper surface and the side surface of the ferrite block are respectively coated with a
metal coating. External loading is adopted to replace traditional internal inserting,
processing is easier, the requirement for the width of the ferrite block is low, and allowance is good. Meanwhile, the contact area between the ferrite block and the outside is relatively large, and heat dissipation ability is high. Under the same length, the
broadband width of the substrate integrated
waveguide ferrite switch is greatly larger than that of an existing switch, the isolation is higher, and the substrate integrated waveguide ferrite switch is suitable for being popularized and applied in the technical field of ferrite switches.