发明名称 |
FREQUENZVERÄNDERBARE OSZILLATORANORDNUNG |
摘要 |
A variable-frequency oscillator configuration, in particular for tuners, includes a feedback network for an oscillator amplifier. The feedback network contains a series circuit formed by two resonant circuit inductors and a resonant circuit capacitor, connected in parallel with a series circuit formed by a further resonant circuit capacitor and a variable capacitor. A switching device is connected to a coupling node between the two inductors, for short circuiting the first resonant circuit capacitor and the resonant circuit inductor connected thereto under the control of a switching signal. The feedback network can consequently be switched over between two frequency bands and is symmetrical with regard to the high-frequency effect. |
申请公布号 |
DE59504917(D1) |
申请公布日期 |
1999.03.04 |
申请号 |
DE1995504917 |
申请日期 |
1995.05.12 |
申请人 |
SIEMENS AG, 80333 MUENCHEN, DE |
发明人 |
HOHMANN, HENNING, D-81243 MUENCHEN, DE |
分类号 |
H03B1/00;H03B5/12;H03J5/24;(IPC1-7):H03J5/24 |
主分类号 |
H03B1/00 |
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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