高频连续时间的OTA-C滤波器

High-Frequency Continuous-Time OTA-C Filter

本文提出了一种模拟无源梯形LC电路(跳耦电路)的高阶OTA-C滤波器。该滤波器具有低的灵敏度和高的截止频率,且与MOS工艺兼容,便于单片集成,调整方便。文中给出了实验结果,证明此滤波器的可行性。

A new high-order OTA-capacitor filter using the leapfrog configuration is presented. The filter has low sensitivity preformance and high cut-off frequencies., it is compatiable with MOS process. The filter is an electronically tunable one. Its cut-off frequencies can be controlled by a DC voltage or current. Experimental results are given to prove its feasibility.