Symbolic active-RC circuit synthesis by admittance matrix expansion

Active-RC circuits with prescribed voltage or current transfer functions are synthesised, starting with the transfer function in symbolic form and making no assumptions about circuit topology. The approach is based on a method of admittance matrix expansion proposed for passive-RC circuits (Haigh, D.G., ibid., p.244-7). The approach relies on the use of linked infinity parameters to describe both ors in the nodal admittance matrix of a synthesised circuit and port admittance matrices exhibiting the prescribed voltage or current transfer functions.