发明公开
EP1267438A4 MULTILAYER ELECTRONIC PART, MULTILAYER ANTENNA DUPLEXER, AND COMMUNICATION APPARATUS
审中-公开
多层电子元件,更多层的天线双工和通信设备
- 专利标题: MULTILAYER ELECTRONIC PART, MULTILAYER ANTENNA DUPLEXER, AND COMMUNICATION APPARATUS
- 专利标题(中): 多层电子元件,更多层的天线双工和通信设备
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申请号: EP01912345申请日: 2001-03-14
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公开(公告)号: EP1267438A4公开(公告)日: 2004-03-31
- 发明人: URIU KAZUHIDE , NAKAMURA HIROYUKI , YAMADA TORU , MATSUMURA TSUTOMU , KAGATA HIROSHI , KAWAKITA KOUJI , ISHIZAKI TOSHIO
- 申请人: MATSUSHITA ELECTRIC IND CO LTD
- 专利权人: MATSUSHITA ELECTRIC IND CO LTD
- 当前专利权人: MATSUSHITA ELECTRIC IND CO LTD
- 优先权: JP2000072830 2000-03-15; JP2000072831 2000-03-15; JP2000072832 2000-03-15
- 主分类号: H01P1/203
- IPC分类号: H01P1/203
摘要:
A multilayer filter comprising a first dielectric layer (2101a) having a first shield electrode provided on one major surface, a second dielectric layer (b) having a resonator electrode provided on the one major surface, a third dielectric layer (2101c) having a bond electrode provided oppositely to a part of the resonator electrode on the one major surface, a fourth dielectric layer (2101d) having a second shield electrode provided on the one major surface, a fifth dielectric layer (2101e) where at least the one major surface is exposed to the outside, and a ground electrode (2108) provided on the other major surface of the first dielectric layer and/or the one major surface of the fifth dielectric layer, characterized in that the first ground electrode and the first shield electrode are connected electrically through a via hole (2109) made in the first dielectric layer.
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