发明名称 |
Dielectric variable-frequency filter having a variable capacitance connected to a resonator |
摘要 |
A dielectric resonator 5 is electrically connected to an input terminal 1 through a coupling capacitor C1. A dielectric resonator 6 is electrically connected to an output terminal 2 through a coupling capacitor C3. The dielectric resonators 5 and 6 are electrically connected to each other through a coupling capacitor C2. A voltage control terminal 3 is electrically connected to the cathode of a variable-capacitance diode D1 and to one end of the coupling capacitor C1 through a choke coil L1. The anode of the variable-capacitance diode D1 is electrically connected to the dielectric resonator 6. That is, the variable-capacitance diode D1 comprises a path interconnecting at least two of said dielectric resonators in a filter 15.
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申请公布号 |
US6111482(A) |
申请公布日期 |
2000.08.29 |
申请号 |
US19980087304 |
申请日期 |
1998.05.29 |
申请人 |
MURATA MANUFACTURING CO., LTD. |
发明人 |
ATOKAWA, MASAYUKI |
分类号 |
H01P1/205;H01P1/213;H04B1/50;(IPC1-7):H01P1/20;H01P1/202 |
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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