发明授权
US06433651B1 Dielectric filter, composite dielectric filter, duplexer, and communication apparatus having resonance-line holes with offset steps
失效
介质滤波器，复合介质滤波器，双工器和具有偏移台阶的谐振线路孔的通信装置
- 专利标题： Dielectric filter, composite dielectric filter, duplexer, and communication apparatus having resonance-line holes with offset steps
- 专利标题（中）： 介质滤波器，复合介质滤波器，双工器和具有偏移台阶的谐振线路孔的通信装置
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申请号： US09394239申请日： 1999-09-13
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公开(公告)号： US06433651B1公开(公告)日： 2002-08-13
- 发明人: Katsuhito Kuroda , Jinsei Ishihara , Hideyuki Kato
- 申请人： Katsuhito Kuroda , Jinsei Ishihara , Hideyuki Kato
- 优先权： JP10-258624 19980911
- 主分类号： H01P1213
- IPC分类号： H01P1213
摘要：
There is provided a dielectric filter comprising: a dielectric block; a plurality of resonance-line holes aligned therein; a resonance line disposed on an inner surface of each of the resonance-line holes; and an outer conductor disposed on an outer surface of the dielectric block; wherein one end of the resonance-line hole is a short-circuited end; a sectional area of at least one of the resonance-line holes is changed at a predetermined portion; the predetermined portion of at least one of the resonance-line holes along to the axial direction of the resonance-line hole and at a side opposed to the adjacent resonance-line hole. According to the above structure, the coupling between specified resonance lines among the adjacent resonance lines can be independently determined without changing a pitch for aligning the resonance-line holes.
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