【摘要】 文章通过对低通滤波器的设计,主要讨论分析了跨导放大器—电容(OTA-C)连续时间型滤波器的结构、性能、设计和具体的实现方法,并利用Cadence软件进行了仿真验证。仿真结果说明OTA-C滤波器是一种便于设计实现、适合处理高频模拟信号并可实现完全集成的滤波,在模拟信号处理方面拥有可观的发展前景和潜力。针对滤波结构中跨导放大器(OTA)线性度不高的情况,通过改变结构,增加了线性调整对管提高了线性度,并通过仿真结果证明了其性能改善的情况。更多还原

【Abstract】 The design principle, circuit structure and performance of OTA-C continuous-time filter is described and analyzed. Cadence tools are used to verify the design. All of results show that OTA-C continuous-time filter is easy to applied in high frequency signal processes. Some modifications are introduced, which can improve the linearity of the OTA in filter.更多还原