Apparatus and method for heating material by adjustable mode...

H - Electricity – 05 – B

Patent

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H05B 6/72 (2006.01)

Patent

CA 2754614

An apparatus for heating a material that is susceptible to RF heating by an RF antenna array. The apparatus includes a source of RF power connected to an antenna array having a plurality of loop antenna sections connected to each other er by dipole antenna sections wherein the loop antenna sections and dipole antenna sections create a magnetic near field and an electric near field such that the ratio of magnetic field strength to electric field strength is approximately a predetermined value. Material is heated by the apparatus by placing the material in the near fields of the antenna array and creating magnetic near fields and electric near fields that approximate a ratio that is predetermined to efficiently heat the material and connecting the antenna array to an RF power source.

L'invention concerne un appareil permettant de chauffer une matière susceptible d'être chauffée par radiofréquence par un réseau d'antennes RF. L'appareil comprend une source d'alimentation RF connectée à un réseau d'antennes comportant une pluralité de sections d'antenne cadre connectées les unes aux autres par des sections d'antenne dipôle, les sections d'antenne cadre et les sections d'antenne dipôle créant un champ magnétique proche et un champ électrique proche tels que le rapport entre l'intensité du champ magnétique et l'intensité du champ électrique se situe approximativement à une valeur prédéterminée. Le chauffage de la matière par l'appareil est effectué en plaçant la matière dans les champs proches du réseau d'antennes et en créant des champs magnétiques proches et des champs électriques proches dont le rapport se situe approximativement à une valeur prédéterminée pour chauffer efficacement ladite matière, et en connectant le réseau d'antennes à une source d'alimentation RF.

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