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access icon free Inverter-based, low-power and low-voltage, new mixed-mode Gm-C filter in subthreshold CNTFET technology

© The Institution of Engineering and Technology
Received 30/04/2018, Accepted 06/09/2018, Revised 27/08/2018, Published 11/09/2018

This study presents a new low-voltage and low-power, mixed-mode, universal Gm-C filter capable of generating simultaneous filtering outputs. The proposed circuit employs only 19 inverters as operational transconductance amplifiers, and 2 grounded capacitors in carbon nanotube field-effect transistor (CNTFET) technology. However, due to the proper use of subthreshold transistors biased at ±0.25 V supply, the power consumption of the proposed circuit is reduced effectively. Furthermore, as the HSPICE simulation results show, the proposed filter consumes only 11.66 µW of power, while its total harmonic distortion is obtained −55.4 dB at 100 MHz centre frequency. Moreover, the input referred noise values at 100 MHz are reduced to 11.57 nV/ and 760 fA in voltage and current modes, respectively.

Inspec keywords: field effect transistor circuits; low-power electronics; filters; operational amplifiers; invertors; carbon nanotube field effect transistors; harmonic distortion

Other keywords: low-voltage new mixed-mode universal Gm-C filter; current modes; simultaneous filtering outputs; power 11.66 muW; operational transconductance amplifiers; carbon nanotube field-effect transistor technology; low-power new mixed-mode universal Gm-C filter; subthreshold CNTFET technology; subthreshold transistors; inverter-based new mixed-mode universal Gm-C filter; HSPICE simulation; power consumption; frequency 100.0 MHz; grounded capacitors; total harmonic distortion

Subjects: Amplifiers; Power electronics, supply and supervisory circuits; Filters and other networks

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