CARBON NANOTUBE FIELD EFFECT TRANSISTOR (CNTFET)-BASED-OPERATIONAL TRANSCONDUCTANCE-AMPLIFIER (OTA) IMPLEMENTATION IN ACTIVE LOW-PASS-FILTER (LPF) AT 14 NM TECHNOLOGY NODE: DESIGNING, SIMULATION, AND PERFORMANCE EVALUATION SUITABLE FOR BIOMEDICAL SIG

The frequency overlap between biomedical signals and noise highlights the critical need for effective signal processing and filtering to ensure precision in radio diagnostics.This work introduces the design of a 14 nm CNFET-OTA-based low-pass filter (LPF) suitable for physiological signal filtration.A second-order LPF architecture integrating CNFET-OTA was proposed and simulated using HSPICE.The filter achieved a cut-off frequency of 100.7 Hz, an average power dissipation of 141.8 nW, a quality factor of 0.707, and a phase margin of 134, confirming its applicability in biomedical domains.Low power consumption, low cut-off frequency, with an appropriate quality factor, makes the proposed LPF well-suited for real-time bio signal processing.Aiming for low power consumption while achieving low cut-off frequency from a 0.5V power supply, CNFET-OTA-based LPFs ensure resilience in real-world applications, paving the way for future advancements in this field.