A. Toker et al., Current-mode all-pass filters using current differencing buffered amplifier and a new high-Q bandpass filter configuration, IEEE CIR-II, 47(9), 2000, pp. 949-954
Citations number
20
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING
A new configuration realizing first-order canonical current processing all-
pass filters based on current differencing buffered amplifier, a recently i
ntroduced active element, is proposed. Using this configuration, two types
of first-order current-mode all-pass filters are derived. They employ only
a single active element and a bare minimum number of passive components. No
component-matching constrains are required. Because of the high performanc
e of the current differencing buffered amplifier, they are suitable for wid
eband applications. The derived filters are cascadable because of their hig
h output impedances and they use fewer active and/or passive components com
pared to their previously reported counterparts. As an application of the p
roposed first-order all-pass networks, a new current-mode high-Q bandpass f
ilter, which offers a number of advantages over its counterparts, is also g
iven.