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China/Asia On Demand
Journal Articles
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diao pin guang bo de shu zi shi xian fang shi
Author(s): 
Pages: 53-55
Year: Issue:  9
Journal: Radio & Television Information

Keyword:  变容压控振荡器调制信号振荡电路振荡器频率设计电路二级管电容组杂散信号数控振荡器;
Abstract: <正> 模拟调频是利用一个调谐到某一频率上的振荡器,其振荡电路由电感和电容组成,当电容值随调制信号变化,就使振荡频率发生变化,从而实现调频。这种振荡器即我们熟悉的压控振荡器(VCO),而最常用的压控变容器件就是变容二级管。 这种技术比较直观,但设计电路时必须面对许多问题,特别是实际应用中变容二极管的电容
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