Journal
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
Volume 123, Issue -, Pages -Publisher
ELSEVIER GMBH
DOI: 10.1016/j.aeue.2020.153286
Keywords
Current backward transconductance amplifier; Chaos; Saturated nonlinear function series; Computer-aided analysis
Funding
- Universidad Autonoma de Tlaxcala (UATx), Tlaxcala de Xicohtencatl, TL, Mexico [CACyPI-UATx-2020]
- Program to Strengthen Quality in Educational Institutions [C/PFCE-2020-29 MSU0013Y-07-23]
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A SPICE-compatible macromodel for emulating the nonlinear behavior of the current backward transconductance amplifier (CBTA) at low-frequency is developed. The novelty of the proposed macromodel is that real physical active device performance parameters together with parasitic elements of the input-output terminals of the CBTA are taken into account. In a first step, the CBTA is designed with +/- 2.5 V by using standard CMOS technology of 0.35 mu m AMS and the main performance parameters, such as: DC gain, bandwidth, slew-rate, dynamic range, along with parasitic elements are obtained. In a second step, the behavioral model of the CBTA is deduced and the SPICE-compatible macromodel is built. In a third step and to validate the deduced behavioral model, two topologies of saturated nonlinear function series (SNFS) based on CBTA are designed. At this point, a generated experimentally chaotic signal was applied as excitation signal to each SNFS built with the CBTA at the transistor level and to the proposed SPICE-compatible macromodel. As a consequence, the derived macromodel can effectively be used for forecasting the behavior of nonlinear circuits in the time-domain with good accuracy, decreasing the CPU-time compared with the model at the transistor level of abstraction. (C) 2020 Elsevier GmbH. All rights reserved.
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