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MICROWAVE OVEN CAVITY EXCITATION SYSTEM PROVIDING CONTROLLED ELECTRIC FIELD SHAPE FOR UNIFORMITY OF ENERGY DISTRIBUTION
MICROWAVE OVEN CAVITY EXCITATION SYSTEM PROVIDING CONTROLLED ELECTRIC FIELD SHAPE FOR UNIFORMITY OF ENERGY DISTRIBUTION
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机译：微波腔激励系统，其提供受控的电场形状以实现能量分布的均匀性
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9D-RG-14634MICROWAVE OVEN CAVITY EXCITATION SYSTEM PROVIDING CONTROLLEDELECTRIC FIELD SHAPE FOR UNIFORMITY OF ENERGY DISTRIBUTIONABSTRACT OF THE DISCLOSUREA microwave oven cavity excitation system forpromoting time-averaged uniformity of microwave energydistribution within the cooking cavity. Circularly-polarized microwave energy is radiated from a feedwaveguide into an adjacent cooking cavity by means ofan aperture, such as an X-slot, in the feed waveguideproperly electrically located laterally within thefeed waveguide so as to nominally radiate an electricfield having circular polarization properties and,overall, shaped as an approximate hemisphere. A cross-sectional slice of the field, for example in the planeof the food supported on a conventionally-located shelf,is circular in shape. The radiating X-slot is control-lably and selectively electrically moved laterally withrespect to the waveguide centerline with the resultthat the sectional shape of the resulting field changesfrom circular to elliptical, with the degree and orient-ation of the ellipse depending upon the direction anddegree of movement of the coupling aperture with res-pect to the waveguide centerline. The shape of thefield is constantly varied through various ellipticalconfigurations during operation, to provide the desiredtime-averaged uniformity of energy distribution througha suitably-programmed controller.
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