发明授权
US06288615B1 Switch-type oscillating circuit for providing isolation between first and second oscillating circuits
失效
用于在第一和第二振荡电路之间提供隔离的开关型振荡电路
- 专利标题： Switch-type oscillating circuit for providing isolation between first and second oscillating circuits
- 专利标题（中）： 用于在第一和第二振荡电路之间提供隔离的开关型振荡电路
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申请号： US09602126申请日： 2000-06-23
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公开(公告)号： US06288615B1公开(公告)日： 2001-09-11
- 发明人: Hiroki Kobayashi
- 申请人： Hiroki Kobayashi
- 优先权： JP11-180705 19990625
- 主分类号： H03B512
- IPC分类号： H03B512
摘要：
A switch-type oscillating circuit includes a first oscillating circuit for outputting an oscillation signal having a first frequency, which includes a first oscillation transistor and a first switch circuit for turning on and off the first oscillation transistor; a second oscillating circuit for outputting an oscillation signal having a second frequency, which includes a second oscillation transistor and a second switch circuit for turning on and off the second oscillation transistor; and a coupling circuit disposed between the output end of the first oscillating circuit and the output end of the second oscillating circuit, and the input end of a common circuit. A first low-pass filter circuit is connected between the output end of the first oscillating circuit and a common potential point, for attenuating the oscillation signal having the second frequency; and a second low-pass filter circuit is connected between the output end of the second oscillating circuit and the common potential point, for attenuating the oscillation signal having the first frequency.
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