Compact microwave source for exciting electrodeless lamps

Details Compact microwave source for exciting electrodeless lamps Compact microwave source for exciting electrodeless lamps

H - Electricity

01

J

H01J 65/04 (2006.01) H01J 23/40 (2006.01) H01J 23/44 (2006.01) H01J 61/16 (2006.01)

Patent

CA 2183988

A magnetron (11) for generating electromag- netic energy in the microwave region includes an ex- tension (14) for its antenna terminal (12). The ex- tension (14) extends the length of the antenna (12) to control the phase of the loading on the magnetron (11). A cylindrical ground flange (16) and perfo- rated screen (19) encloses an electrodeless lamp (15), thereby permitting microwave energy to excite the gas within the lamp (15), while confining the energy to the space bounded by the perforated screen (19) and cylindrical ground flange (16). The extension (14) for the antenna (12) has a length which maintains the reflection coefficient phase to a level which does not adversely affect the magnetron operating frequency.

Un magnétron (11) pour produire de l'énergie électromagnétique dans le domaine des micro-ondes comporte une extension (14) pour son antenne (12). L'extension (14) augmente la longueur de l'antenne (12) pour contrôler la phase de la charge du magnétron (11). Une bride cylindrique rodée (16) et un écran perforé (19) entourent une lampe (15) sans électrodes, ce qui permet à l'énergie des micro-ondes d'exciter le gaz dans la lampe (15), tout en confinant l'énergie dans l'espace délimité par l'écran perforé (19) et la bride cylindrique rodée (16). L'extension (14) de l'antenne (12) a une longueur qui maintient la phase du coefficient de réflexion à un niveau qui n'influe pas d'une manière néfaste sur la fréquence de fonctionnement du magnétron.

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