Simulation Match of Electromagnetic Field in Microwave Oven

The typical M20L microwave oven was taken as representative and used computer simulation technology to study the match problems of cavity.Through the entity modeling of microwave oven and setting of electrical characteristics parameter of medium material in cavity,it studied and simulated M20L microwave oven.Results were in line with the actual test data,and verified the accuracy of model.On that basis,it researched the influence microwave oven cavity′s structure parameters on the performance of the match,found the main parameters of influencing match are: height of cavity roof,position of waveguide,coupling window and roller height,etc.The optimization design of the main parameters solved the M20L microwave oven′s problems such as striking fire and fusing shaft,also improved output efficiency,and further experiments or research confirmed that the microwave oven′s various perfor-mance meet the requirements.