The two circuit techniques of equivalent inductance and cross-coupled configuration are used to design a high frequency,low phase noise two-stage VCO,which can generate two pair quadrature outputs because of its even stage ring.

• 采用等效为电感特性的负载和交叉耦合结构两种电路技术设计了一种高工作频率、低相位噪声的二级环形振荡器(two-stage VCO).