Filter tuning device and tuning plate including a number of...

H - Electricity – 01 – P

Patent

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Details

H01P 7/06 (2006.01) H01P 1/205 (2006.01) H01P 1/211 (2006.01)

Patent

CA 2291100

The present invention relates to a tuning device in a radio filter equipment for mobile telephony in which one or more cavities in the equipment should be tuned to the right frequency. The invention also relates to a tuning plate including a number of such tuning devices. The tuning device (401) consists of preferably regular or square formed depressed parts (1, 6) in the tuning plate (300) of the filter equipment. The depressed part converges each to a square formed central plate (5) which is provided with an elevation or bulb (3) upwards. By turning a tuning screw on the equipment will then develop a force on the plate and the surrounding depressed parts. This implies that the tuning can be made automatically, more secure and with less risk for intermodulation. Different embodiments of the depressed parts are described.

L'invention concerne un dispositif d'accord de filtres dans un équipement de filtres haute fréquence destiné à une téléphonie mobile dans laquelle au moins une cavité de l'équipement devrait être accordée à la bonne fréquence. L'invention concerne également une plaque d'accord comportant un certain nombre de ces dispositifs d'accord. Le dispositif d'accord (401) est composé, de préférence, de parties en dépression (1, 6) de forme rectangulaire ou carrée réalisées dans la plaque d'accord (300) de l'équipement filtrant. Les parties en dépression convergent respectivement vers une plaque centrale (5) de forme carrée et dotée d'une élévation ou d'un bulbe (3) orientés vers le haut. En tournant une vis d'accord de l'équipement, on exerce une force sur la plaque et les parties en dépression environnantes. Cela implique que l'accord peut être fait automatiquement, de façon plus sûre et avec moins de risques d'intermodulation. L'invention décrit différentes réalisations des parties en dépression.

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