High-frequency linear transformation elliptic filters employing minimum number of OTAs
Journal
Electronics Letters
Journal Volume
31
Journal Issue
18
Pages
1562-1564
Date Issued
1995-08
Date
1995-08
Author(s)
Abstract
High-frequency linear transformation (LT) elliptic filters employing a minimum number of operational transconductance amplifiers (OTAs) and capacitors are presented. Based on the LT, an OTA-C elliptic filter can be realised efficiently by adding capacitors to the relative all-pole filter as passive prototype counterparts. The canonical filter with all nodes having a desired capacitance, which is suitable for high-frequency operation, is developed. As an example, a new third-order elliptic lowpass filter is synthesised. Experimental results arc obtained to verify the theoretical analysis. Furthermore, the proposed circuit can be extended to higher-order filters. © 1995, IEE. All rights reserved.
Subjects
Active filters; Elliptic filters; Operational transconductance amplifiers
Other Subjects
Capacitance; Capacitors; Electric network analysis; Electric network synthesis; Low pass filters; Operational amplifiers; Passive filters; Transconductance; All pole filters; Elliptic filters; High frequency linear transformation; Operational transconductance amplifiers; Active filters
Type
journal article
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