A method for synthesizing transfer functions containing several variable parameters

In this paper, we propose a method of synthesizing multivariable transfer functions by active-
RC
networks using state space methods. Multivariable transfer functions are functions of the complex angular frequency s together with several variable parameters
\Lambda_{i}
, which are independent of time and frequency, but which can be changed continuously and independently. We introduce some special classes of multivariable transfer functions which can be realized with the minimal or almost the minimal number of elements.