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22. 发明授权

US5783978A Band rejection filter having a plurality of dielectric resonator with cutout portions having electrodes therein 失效
标题翻译：带阻滤波器具有多个介质谐振器，其中具有电极的切口部分
公开(公告)号：US5783978A
公开(公告)日：1998-07-21
申请号：US665712
申请日：1996-06-18
申请人： Toshiharu Noguchi , Hiroshi Ono
发明人： Toshiharu Noguchi , Hiroshi Ono
IPC分类号： H01P1/205 , H01P7/04
CPC分类号： H01P1/2053
摘要： A band rejection filter includes at least of two dielectric resonators and an inductor. Each dielectric resonator is composed of a dielectric base formed as a rectangular prism and having a penetrating hole in a central portion, an inner conductive layer arranged on an inner side surface of the dielectric base, an outer conductive layer arranged on an outer side surface of the dielectric base, a connecting conductive layer arranged on one end surface of the dielectric base to connect the outer conductive layer and the inner conductive layer, an outer conductor layer cut-out groove formed on the outer side surface of the dielectric base, and an independent coupling electrode surrounded by the outer conductor layer cut-out groove on the dielectric base. The inductor connects the independent coupling electrode of the dielectric resonators, and the outer conductive layers of the dielectric resonators are connected with each other. The outer conductor layer cut-out groove is surrounded by the outer conductive layer, thus avoiding change in a resonance frequency in the band rejection filter. The outer end surface of the dielectric base is opened and is surrounded by the outer conductive layer thus avoiding change in attenuation characteristics of the band rejection filter.
摘要翻译：带阻滤波器至少包括两个介质谐振器和电感器。每个介质谐振器由形成为矩形棱镜并在中心部分具有穿透孔的电介质基底，布置在电介质基底的内侧表面上的内部导电层，布置在电介质基底的外侧表面上的外部导电层所述电介质基底，布置在所述电介质基底的一个端面上以连接所述外部导电层和所述内部导电层的连接导电层，形成在所述电介质基底的外侧表面上的外部导体层切口槽，以及独立的耦合电极由电介质基底上的外导体层切口槽包围。电感器连接介质谐振器的独立耦合电极，并且介质谐振器的外导体层彼此连接。外导体层切出槽被外部导电层包围，从而避免了带阻滤波器中谐振频率的变化。电介质基体的外端表面被打开并被外导电层包围，从而避免了带阻滤波器的衰减特性的变化。

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