发明名称 Dielectric filter
摘要 <p>Resonance holes (2) whose inner surfaces are covered with an inner conductor (3) (or other inner conductor structures) are formed in a dielectric block (1) such that the resonance holes (2) extend between two opposing end faces. The outer surface of the dielectric block (1) is covered with an outer conductor (4). Input/output electrodes (5) are formed out of part of the outer conductor (4) at predetermined locations on the surface of the dielectric block (1). A slot (11) is formed near one end face of the dielectric block (1) so that the inner conductors (3) are separated by the slot (11) into isolated parts. By means of the slot (11), an electrically open end of each resonator is formed at a location spaced inward from the physical end face. Thus it is possible to produce a low-cost high-performance dielectric filter in which an electrically open end is formed with high accuracy at a location spaced inward from the physical end face of a dielectric block. &lt;IMAGE&gt;</p>
申请公布号 EP0790659(A1) 申请公布日期 1997.08.20
申请号 EP19970102363 申请日期 1997.02.13
申请人 MURATA MANUFACTURING CO., LTD. 发明人 TSUJIGUCHI, TATSUYA
分类号 H01P7/04;H01P1/205;(IPC1-7):H01P1/205 主分类号 H01P7/04
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