TIME RESPONSE CHARACTERISTICS OF LINEAR NETWORKS AND TRANSFORMATION METHODS IN NETWORK SYNTHESIS. ACTIVE RC NETWORK SYNTHESIS

Descriptions are presented of the major methods of active RC network synthesis currently available, with critical analyses of advantages and shortcomings. In some cases, the original methods were extended and inaccuracies corrected. The major problem in the design of active RC networks appears to be the problem of sensitivity. The sensitivity of the realization of high order functions goes up quite rapidly with the order. In the methods of synthesis using negative impedance converters this necessitates the realization of cascaded low order networks utilizing isolation networks. The classical feedback method overcomes the isolation problem. However, the assumption of ideal amplifiers here constitutes a drawback. This, in turn, is overcome by the methods described, which are based on models of practical active devices. (Author)