发明名称 |
Dielectric resonator, filter device using same and method of producing such dielectric resonator. |
摘要 |
<p>There is disclosed a dielectric resonator (18; 28) in which a groove (15; 25) is formed in an upper surface (12; 22) of a resonator body (11; 21) adjacent to an outer periphery of a through hole (14; 24) formed through the body (11; 21), and an electrically-conductive film (17; 27) on the inner surface of the groove (15; 25) is electrically connected to an electrically-conductive film (17; 27), formed on the inner peripheral surface of the through hole (14; 24), via an electrically-conductive film (17; 27) formed on a portion of the upper surface (12; 22) of the body lying between the groove (15; 25) and the through hole (14; 24). Thanks to the provision of the groove (15; 25) having the electrically-conductive film (17; 27) formed on its inner surface, the length of the body (11; 21) can be reduced.</p> |
申请公布号 |
EP0434296(A2) |
申请公布日期 |
1991.06.26 |
申请号 |
EP19900313532 |
申请日期 |
1990.12.12 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
AIZAWA, KIMIO;KITA, MASAKI |
分类号 |
H01P1/212;H01P1/205;H01P7/04;H01P11/00 |
主分类号 |
H01P1/212 |
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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