© The Institution of Electrical Engineers
Design equations are given for realising a pair of complex poles by an active distributed structure, utilising exponential RC lines. It is shown that the response of the structure closely approximates that of a 2nd-order low-pass filter. The loci of the complex poles may be considered, to a high degree of accuracy, to lie on parabolas, resulting in a simple design procedure. It is shown that the sensitivity of the structure with respect to the active element decreases with increasing taper, and that it may be made considerably lower than that of Kerwin's structure, which uses uniform RC lines.
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M.S. Ghausi ,
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Mahdi, H.: `Synthesis of low pass linear phase active circuits using distributed RC networks', Symposium digest of the IEEE international symposium on circuit theory, 1969, p. 102–104.
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Kerwin, W.J.: `Synthesis of active RC networks containing lumped and distributed elements', Proceedings of the 1st Asilomar conference on circuits and systems, 1967, p. 288–298.
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http://iet.metastore.ingenta.com/content/journals/10.1049/piee.1973.0010
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content/journals/10.1049/piee.1973.0010
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