Synthesis of a resonant transfer filter as applied to a time division multiplex system

In a previous paper,1 Perkins describes a time division multiplex transmission path, developed for use in an electronic switchboard.2 This transmission path incorporates the use of a ¿resonant transfer¿ filter, the operation of which was first described in reference 3. This type of filter and the associated theory have since been described by several authors.4,5 The purpose of this paper is to present a method used to synthesize an economical network whose characteristics will allow it to operate efficiently in this system. The first sections cover the general requirements on the network and the special conditions imposed to effect a proper operation of the networks in a resonant transfer system. The general method of synthesis is then presented which involves both the steady-state and transient responses. Since the actual synthesis by use of well-known procedures of insertion parameter theory are familiar to most filter designers, the details of the synthesis are omitted and only the general procedure is given.