发明名称 |
Dielectric filter, dielectric duplexer, and communication device |
摘要 |
A dielectric filter which has suitable attenuation characteristics and which readily exhibits desired characteristics. First, second and third inner-conductor holes having an inner conductor on each of the surfaces thereof are formed inside a dielectric block having an outer conductor on the outer surface thereof. First and second I/O electrodes extend from opposing side-surfaces to the undersurface of the dielectric block and are separated from the outer conductor. The side-surfaces are orthogonal to the direction in which the inner-conductor holes are arrayed in the dielectric block, and the undersurface is a mounting surface for facing a mounting board. The first I/O electrode extends from one of said side-surfaces near the first inner-conductor hole, to a position beyond a remote side of the second inner-conductor hole, that is, the side near the third inner-conductor hole.
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申请公布号 |
US6642817(B2) |
申请公布日期 |
2003.11.04 |
申请号 |
US20020076724 |
申请日期 |
2002.02.13 |
申请人 |
MURATA MANUFACTURING CO. LTD |
发明人 |
KURODA KATSUHITO;MIYAMOTO HIROFUMI;ISHIHARA JINSEI;KATO HIDEYUKI |
分类号 |
H01P1/205;H01P1/212;H01P1/213;H01P7/04;H04B1/40;(IPC1-7):H01P1/205 |
主分类号 |
H01P1/205 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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