Dielectric filter, transmitting/receiving duplexer, and...

H - Electricity – 01 – P

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Details

H01P 7/10 (2006.01) H01P 1/20 (2006.01) H01P 1/208 (2006.01) H01P 1/213 (2006.01) H03H 9/24 (2006.01)

Patent

CA 2235460

In a dielectric filter in which electrodes are formed on both principal planes of a dielectric plate while pairs of electrode non-formed portions having substantially the same shape are defined in the electrodes in opposing relation, areas positioned between the pairs of opposing electrode non-formed portions serve as resonance areas, coupling members are provided to be coupled with the resonance areas, and a cavity is provided to define a space surrounding the resonance areas and the coupling members, a signal is prevented from propagating in the parallel plate mode through a waveguide path formed between electrodes formed on both principal planes of the base plate serving as part of a cavity. Electrodes are formed on both principal planes of a dielectric plate (3) with pairs of electrode non-formed portions (4a, 4b, 4c, etc.) defined in the electrodes in opposing relation so that areas positioned between the electrode non-formed portions serve as resonance areas. Microstrip lines (9, 10) are provided on an upper surface of a base plate (6), and an electrode (11) is formed in spaced relation from the microstrip lines (9, 10) by a predetermined distance. Through holes (13) for making electrical conduction between the electrodes formed on both principal planes of the base plate (6) are bored in the base plate in array.

L'invention est un filtre diélectrique dans lequel des électrodes sont formées sur les deux plans principaux d'une plaque diélectrique tandis que des paires d'éléments distincts ayant essentiellement la même forme sont formées en relation opposée dans les électrodes, et les zones qui se trouvent entre ces paires d'éléments distincts opposés servent de zones de résonance. Ces zones de résonance sont couplées au moyen de coupleurs et une cavité délimite une espace autour d'elles et des coupleurs. Les signaux ne peuvent se propager dans le trajet de guidage créé entre les électrodes formées sur les deux plans principaux de la plaque de base servant de partie de cavité. Des électrodes sont formées sur les deux plans principaux d'une plaque diélectrique (3) avec des paires d'éléments distincts (4a, 4b, 4c, etc.) formés dans ces électrodes en relation opposée de telle façon que les zones qui se trouvent entre ces éléments distincts servent de zones de résonance. Des lignes à microruban (9, 10) sont utilisées sur la surface supérieure d'une plaque de base (6) et une électrode (11) est formée à une distance prédéterminée de ces lignes à microruban (9, 10). Un réseau de trous de traversée (13) est créé pour établir le contact électrique entre les électrodes formées sur les deux plans principaux de la plaque de base (6).

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