Abstract
AbstractIn this study, new active elements called inverting current differencing buffered amplifier (ICDBA) and current‐controlled ICDBA (C‐ICDBA) are presented. Unlike current differencing buffered amplifier (CDBA), their voltage transfer ratio between the Z and W terminals are equal to minus one. Furthermore, CMOS implementations of the C‐ICDBA and current‐controlled CDBA (C‐CDBA) are shown. Moreover, a novel first‐order all‐pass filter is proposed to show advantages and new circuit producing capability of the ICDBA/C‐ICDBA. Lastly, an electronically tunable band‐pass filter is given as an application example using the presented all‐pass filter. The measured and simulation results are in good agreement with the theoretical ones. Copyright © 2010 John Wiley & Sons, Ltd.
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