A CAD application for optimising the bandwidth in the structured design of negative-feedback amplifiers by using the open-loop gain-poles product

Structured design of analogue electronics has been devised as an alternative methodology of design that resorts to basic concepts of circuit theory and general electronics in order to achieve a hierarchy-driven design process. On the contrary to traditional methods of design, where a previously designed circuit is used as initial guess in the design procedure, structured design has as starting point an ideal solution. Such a solution does not exist, therefore the f inal (and feasible) solution must be obtained through a method that uses hierarchy on its full extent. This paper introduces a MAPLEbased application which is aimed to optimise the bandwidth of negative-feedback amplifiers by resorting to the open-loop gain poles-product. The symbolic evaluation of the involved transfer functions results in more insight in the design procedure. Key-Words: – Design-automation, Analogue design, Symbolic Analysis Applications