(一)引言 开关电容(SC)滤波器在1977年被重新提出后,受到了极大的注意。最近,一些作者又利用开关电容方法来实现别的模拟电路,如正弦波振荡器、过零检波器和峰值检波器、跟踪滤波器、锁相环和平衡解调器、压控张弛振荡器,以及模拟延迟线等。 本文描述一种采用感性开关电容的正弦波振荡器。与文献[3]中采用并联开关电容的方案相比,由于感性开关电容在一个时钟周期Tc内,完成两次信息传输,因而预期 (A) Introduction Switched capacitor (SC) filter was re-proposed in 1977, has received a great deal of attention. Recently, some authors have used switched capacitor methods to implement other analog circuits such as sine-wave oscillators, zero-crossing and peak detectors, tracking filters, phase-locked loops and balanced demodulators, voltage controlled relaxation oscillators, As well as analog delay lines. This article describes a sinusoidal oscillator using inductive switching capacitors. Compared with the scheme of using shunt switch capacitor in [3], since the inductive switch capacitor completes two transmissions of information within one clock cycle Tc, it is expected that