发明名称 |
Dielectric filter, antenna duplexer and communications appliance |
摘要 |
A dielectric filter, has a plurality of resonators; and at least one transmission line provided among said plurality of resonators, wherein a band rejection characteristic is formed around a resonance frequency of said resonator, and a line length of said transmission line is shorter than 1/4 of a wavelength corresponding to the resonance frequency of said resonator. <IMAGE>
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申请公布号 |
EP1160907(A2) |
申请公布日期 |
2001.12.05 |
申请号 |
EP20000128638 |
申请日期 |
2000.12.28 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
MAEKAWA, TOMOYA;KUSHITANI, HIROSHI;SHIGEMURA, HIROSHI;YAMADA, TORU;ISHIZAKI, TOSHIO;NAKAKUBO, HIDEAKI |
分类号 |
H01P1/203;H01P1/213;(IPC1-7):H01P1/203 |
主分类号 |
H01P1/203 |
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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