发明授权
- 专利标题： Fully monolithic voltage controlled oscillator with wide tuning range
- 专利标题（中）： 全调整压控振荡器，调谐范围宽
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申请号： US22536申请日： 1998-02-12
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公开(公告)号： US5973575A公开(公告)日： 1999-10-26
- 发明人: Kenji Kamogawa , Kenjiro Nishikawa , Ichihiko Toyoda , Tsuneo Tokumitsu
- 申请人： Kenji Kamogawa , Kenjiro Nishikawa , Ichihiko Toyoda , Tsuneo Tokumitsu
- 申请人地址： JPX Tokyo
- 专利权人： Nippon Telegraph and Telephone Corp.
- 当前专利权人： Nippon Telegraph and Telephone Corp.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX9-044876 19970214
- 主分类号： H03B1/00
- IPC分类号： H03B1/00 ; H03B5/12 ; H03B5/18
摘要：
A voltage controlled oscillator for wide tuning range of frequency with less phase noise has a bipolar transistor provided with a positive feedback circuit between a base and an emitter of the transistor, an impedance matching circuit coupled with a collector of the transistor and an output terminal, a resistor coupled between the base of the transistor and a control source which provides control voltage for adjusting oscillation frequency of the oscillator. The base of the transistor shows capacitive negative impedance, and an inductive element is coupled with the base of the transistor for oscillation. The emitter of the transistor is grounded for D.C. voltage through an inductor or a transmission line, or coupled with a control voltage.
公开/授权文献
- USD367396S Convection oven 公开/授权日：1996-02-27
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