Broadband low-loss sum-difference device integrated on double-sided copper-clad plate and simulation design method

The invention relates to a broadband low-loss sum-difference device integrated on a double-sided copper-clad plate and a simulation design method, the broadband low-loss sum-difference device comprises a single-layer dielectric substrate, metal layers on the upper surface and the lower surface of the single-layer dielectric substrate and an aluminum bottom plate with a groove, and a differential coupling metal sheet in the upper metal layer is coupled with a grounding metal sheet in the lower metal layer in a wide edge mode to form a differential circuit; the T-shaped metal sheet in the upper metal layer, the pair of bent branches and metalized via holes in the lower metal layer and the aluminum bottom plate form a sum-port power division circuit; and the use of jumper wires and narrow gaps is avoided. The broadband sum-difference device has the advantages of being simple in structure, small in machining difficulty, low in loss, more stable in phase difference, better in isolation degree and wider in bandwidt