Microwave apparatus and method for heating thin loads

摘要

Apparatus and method for coupling microwave energy to a relatively thin load where the load has a thickness less than a half wavelength in the load and a penetration depth greater than the thickness of the load using an evanescent mode for the microwave energy where the mode is a TM type having a predominantly capacitive reactance and the load has a predominantly inductive reactance such that the mode is at least partially resonant in the system of the load and applicator space. The capacitive reactance evanescent mode is achieved by making the normalized wavelength be greater than 1.0.