模拟相乘器在正交压控振荡器中应用

Application of Analog Multiplier in Quadrature Voltage-Controlled Oscillator

本文提供了用模拟相乘器与运算放大器相配合组成的压控振荡器电路，可以产生一对相 移为９０°的正弦和余弦的正交信号，其振荡频率和幅度均可直接通过改变外加电压在一个很宽 范围内连续可调，且具有线性好，频率漂移小等优点．本电路实验结果与理论分析相符．

This paper presents the quadrature voltage-contralled oscillator equiped with multiplier and operational amplifier. This enables the VCO to control the oscillator amplitude and frequency simultaneously, and thus to enlarge the scope of application of the analog multiplier.