发明名称 |
Dielectric resonator, dielectric filter, duplexer, and communication device |
摘要 |
The invention provides. a dielectric resonator for example in the TE010 mode characterized in that electrodes are formed on both principal surfaces of a dielectric plate in such a manner that influence of spurious waves propagating in a space between the electrodes and a conductive plate is prevented thus preventing the reduction in Qo and degradation in the attenuation characteristic in the frequency ranges outside the passband. The inner diameter of the cavity is selected such that when the cavity is regarded as a waveguide the cutoff frequency of the waveguide becomes higher than the resonant frequency of a resonance region and such that the inner diameter of the cavity is greater than a non-electrode part.
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申请公布号 |
US6445263(B1) |
申请公布日期 |
2002.09.03 |
申请号 |
US20000567291 |
申请日期 |
2000.05.08 |
申请人 |
MURATA MANUFACTURING CO., LTD. |
发明人 |
SONODA TOMIYA;HIRATSUKA TOSHIRO;IDA YUTAKA;MIKAMI SHIGEYUKI;KANAGAWA KIYOSHI |
分类号 |
H01P1/20;H01P1/208;H01P1/212;H01P1/213;H01P5/08;H01P7/10;H04B1/50;(IPC1-7):H01P1/213 |
主分类号 |
H01P1/20 |
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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