发明名称 |
High frequency filter circuit |
摘要 |
A filter circuit having an amplifier stage, an upstream filter and a downstream bandpass filter. The filter includes, inter alia, a rejection circuit tuned to an intermediate frequency and a series circuit, tuned to an image frequency and formed by a capacitor and a lambda /4 coaxial stub. The inductance formed by the coaxial stub is shared by the series circuit and the rejection circuit.
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申请公布号 |
US5703545(A) |
申请公布日期 |
1997.12.30 |
申请号 |
US19960613423 |
申请日期 |
1996.03.11 |
申请人 |
DEUTSCHE THOMSON-BRANDT GMBH |
发明人 |
DUELLBERG, GERALD;PEUSENS, HERBERT;ARMBRUSTER, VEIT |
分类号 |
H04N5/445;H01P1/205;H01P7/04;H03H7/01;H03H7/075;H04B1/10;H04B1/26;(IPC1-7):H01P1/20 |
主分类号 |
H04N5/445 |
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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