Practical Filters Using Distributed RC Structures

Abstract

<p>Theoretical and experimental studies into practical filters using distributed RC structures are described. Various techniques to surmount the transcendental nature of the circuit parameters of such structures are considered and shown to be mostly too clumsy or restricted for practical use. The use of computer-aided analysis together with a sound physical understanding is suggested as an alternative.</p> <p>Application of the structures to active filters is considered and the experimental development of lowpass and bandpass amplifiers using them described. This leads to the presentation of a general design procedure for bandpass amplifiers using distributed RC null circuits.</p> <p>It is concluded that distributed RC filters suffer from a number of limitation but have a part to play as a circuit element and are now ready to advance to the stage of practical implementation.</p>