Microwave oven mode stirrer

In multimode cavities (conceptually similar to a domestic oven) the microwaves, which enter the cavity, are reflected by the walls and the load over the typically large cavity. A mode stirrer ensures that the field distribution is as homogeneous as possible. 

Microwave radiation is generated by means of a magnetron (microwave diode). The radiation is then directed through a waveguide into the interior of the oven. Even distribution of the radiation is facilitated by a mode stirrer that prevents the development of standing waves, as well as a turntable and perhaps a rotating antenna located beneath the oven floor. 

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