amplifier a -P m network%'' Roc. IEEE, VOl. 58, tion, the capacitor included in our circuits should be left externally D. H. Schoonaert and J. Kretzschmar, "Realization of operational realization rather than a fned-inductance one. Therefore, in IC realiza-June 1970 s. K. D~ 'and G. D~, "~~a l i~~t i~~ of a-pass transfer function connected to obtain its arbitrary inductance value, SO its large value is using a differential amplifier, IEEE Trans. Cimrit Theory, vol. not a big drawback as Rikmki and Choudhry pointed out. CT-20, pp. 326-327, May 1973. Furthermore, in active filter synthesizing, it seems that reducing the G. S. Moschytz, LinewInfe fedNetwork Fundamenfals. New number of op-amps used is still bporGrnt in order to decrease power York: Van Nostrand Reinhog 1974, ch. 3, pp. 116-141. scheme of active RC all-pass filters," Elec?ron Le-., vol. 13, D. Patranabis and M. P. Tripathi. "Addibonal generalization consumption and cost A. Liberatore, "AdditiEnal considerations about Williams's circuit for all p a s networks, Electron. Let&., vol. 7, pp. 77-78, Feb.
1971.A. G. J. Holt and J . P. Gray, "Active all-pass sections," Roc.D. Patranabis and M. P. Tripathi, ''An active RC all-pass filter," Inf.