【摘要】 本文就接地和浮地有源模拟元件的通用性结构、限制和实现条件作了详尽地讨论,并进行了实验,实践表明,理论和实际相符。文中通过五种三阶椭圆低通滤波器的设计,对因运放增益带宽受限对滤波器通带特性的影响作了计算和比较,进一步阐述了用本方法可获得双二次最佳结构的情况。更多还原

【Abstract】 In this article, the universal constructions, limitations and conditions for realization of earthed and floatingearthed active simulated universal components are discussed. It is shown by the experiments tha the theory is in conformity with the practice. Finally, the effect on the bandpass characteristics of the filter aroused on account of the limitation suf- fered by the gain band width of the operational amplifier is calculated and compared through designing five kind of third order ellipse low pass filter, and it is further illustrated that a twin secondary optimum structure can be obtained by means of this research.更多还原