一、引言晶体压控振荡器(XVCO)由于具有良好的技术性和经济性,在工程上得到了广泛应用。这已经是众所周知的事。然而,在这广泛的工程应用中,设计和调整这种电路却常常遇到某些实际困难;在某些具体应用中,往往未能充分利用这种电路的潜在能力;甚至在设计和调整中,存在某些原则性的不当之处。例如:回授支路结构不当、振荡强度调整不当、未 I. Introduction Crystal VCO (XVCO) due to its good technical and economic, has been widely applied in engineering. This is already a well-known thing. However, in this wide range of engineering applications, some practical difficulties are often encountered in the design and adjustment of such circuits; in some specific applications, the potential of such circuits is often not fully utilized; even in design and tuning , There are some principles of improper. For example: improper feedback branch structure, the oscillation strength adjustment is not, not