Industrial Microwave Systems offers patented microwave processing technology involving the design of a Microwave T-Junction Applicator. A T-junction microwave applicator and a method for making a T-junction microwave applicator with a microwave source supplying electromagnetic energy through a junction arm to a pair of collinear arms extending in opposite directions from their junction with the junction arm. Two collinear arms form a main waveguide terminated in end walls in which entrance and exit ports form for a conveyor to convey material to be heated through the main waveguide for exposure to electromagnetic energy. A rectangular conductive ridge in the wall of the main waveguide opposite the junction arm extends the length of the applicator. A cylindrical tuning bar spanning the junction positions vertically in a plane perpendicular to the axis of the main waveguide to maximize power transfer to the heated material.
The invention relates generally to microwave heating, curing, and drying devices and, more particularly, to microwave applicators in which two collinear arms of a waveguide T- junction form an exposure tunnel through which materials are conveyed and subjected to uniform microwave exposure.