Analysis of Electromagnetic Fields in a Mass-Produced Microwave Oven Using the Finite-Difference Time-Domain Method

The finite-difference time-domain (FDTD) method was used to derive electromagnetic field distributions in a mass-produced microwave oven where the particular influence of the magnetron output antenna in a short feeding wave guide was considered or not considered It was confirmed in visual and quantitative comparison that the influence of the magnetron antenna geometry is negligible. A procedure for reduction of uneven heating is also discussed, using an approach of oven development as a practical example.

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