The paper presents an optimization procedure whereby the root sensitivity can be optimized to a prescribed value, whose modulus and argument can be controlled independently. The method of optimizing

and

. sensitivity is described. It is shown that

and

, sensitivity can be reduced to zero by adjusting the argument or the magnitude of the pole sensitivity. Two types of networks are considered for the present synthesis. Details of passive sensitivity analysis are given. It is shown that the passive sensitivities are very low and comparable to those of passive

filters. The present method is compared with that of Cheung\´s. To illustrate the method, a bandpass filter having

is designed, and the theoretical considerations are confirmed by the experimental results.