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Linearly tunable CMOS VDBA design
Date Issued
June 8, 2018
Type
Conference Paper
Abstract
A CMOS voltage differencing buffered amplifier (VDBA), whose transconductance gain can be varied linearly by the external DC bias current, is described in this paper. A current squaring circuit is used for biasing the transconductance amplifier with improved wide-input dynamic range, yielding electronically and linearly tunable transconductance. The application of the proposed VDBA in realizing a phase shifter circuit is also suggested. Simulations on the circuits are performed using PSPICE program to confirm the theory and demonstrate the circuit performances.
Citation
2018 3rd International Conference on Control and Robotics Engineering Iccre 2018, 143-146, 2018