A Novel Carbon Nanotube Field Effect Transistor Based Analog Signal Processing Circuits for Low-power Communication Systems

Sankar, P. A. Gowri; Udhayakumar, K.

doi:10.1007/978-81-322-1817-3_33

Cited by 4 publications

(10 citation statements)

References 11 publications

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“…e comparative examination of the important parameters of CNFET-FCOA architectures affirms that a noteworthy improvement in performance is achieved in the CNFET-based FCOAs and the gain is highest amongst three for pitch equals to 8 nm. e similar kind of performance is not possible at such 4 Journal of Nanotechnology very deep submicron levels using CMOS due to extreme short-channel effects, lithographic limitations, process variations, leakage current, and source-to-drain tunneling [25,[37][38][39][40][41]. Further CNFET technology can also be easily clubbed with the bulk CMOS technology on a single chip and utilizes the same infrastructure [23,30,42].…”

Section: Optimum Choice For Pitch and Diameter Of Cnfetmentioning

confidence: 99%

“…e op-amp A1 output turns out to be positive only during the positive half cycle of the input waveform. V′ becomes negative which eventually turns ON the diode D1 [41]. e voltage at the inverting terminal of A2 appears at the output, which is equal to the input, due to the virtual ground at the two input terminals of op-amp A2.…”

Section: Journal Of Nanotechnologymentioning

confidence: 99%

“…A variable DC level CNFET-FCOA-based clamper circuit is presented in Figure 5(j). is is a positive clamper because the input waveform is clamped at +V ref [41]. In this case, both AC and DC input voltages need to be applied and output of the clamper is a net result of AC and DC input voltages applied to the inverting terminal, and a potentiometer is connected to noninverting input terminals to vary V ref .…”

Section: Cnfet-fcoa-basedmentioning

confidence: 99%

“…As the name suggests, a peak detector is a circuit which detects the peak value of applied input signal [41,43] as shown in Figure 5(m).…”

Section: Cnfet-fcoa-based Peak Detectormentioning

confidence: 99%

“…e capacitor C1 gets charged to the peak value V pp of the input voltage, whenever diode D1 becomes forward biased during every positive half cycle of the input. On the contrary, the charge/voltage across capacitor is retained during every negative half cycle of the input, since the diode D1 is nonconducting and the only discharge path for C1 is through the output terminal V o [41,43]. us, the capacitor retains the peak value even as the waveform drops to zero.…”

Section: Cnfet-fcoa-based Peak Detectormentioning

confidence: 99%

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Design of Analog Signal Processing Applications Using Carbon Nanotube Field Effect Transistor-Based Low-Power Folded Cascode Operational Amplifier

Bendre

Kureshi²,

Waykole

2018

Journal of Nanotechnology

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Carbon nanotube (CNT) is one of the embryonic technologies within recent inventions towards miniaturization of semiconductor devices and is gaining much attention due to very high throughput and very extensive series of applications in various analog/mixed signal applications of today’s high-speed era. The carbon nanotube field effect transistors (CNFETs) have been reconnoitred as the stimulating aspirant for the future generations of integrated circuit (IC) devices. CNFETs are being widely deliberated as probable replacement to silicon MOSFETs also. In this paper, different analog signal processing applications such as inverting amplifier, noninverting amplifier, summer, subtractor, differentiator, integrator, half-wave and full-wave rectifiers, clipper, clamper, inverting and noninverting comparators, peak detector, and zero crossing detector are implemented using low-power folded cascode operational amplifier (op-amp) implemented using CNFET. The proposed CNFET-based analog signal processing applications are instigated at 32 nm technology node. Simulation results show that the proposed applications are properly implemented using novel folded cascode operational amplifier (FCOA) implemented using CNFET.

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Section: Optimum Choice For Pitch and Diameter Of Cnfetmentioning

confidence: 99%

Section: Journal Of Nanotechnologymentioning

confidence: 99%

Section: Cnfet-fcoa-basedmentioning

confidence: 99%

“…As the name suggests, a peak detector is a circuit which detects the peak value of applied input signal [41,43] as shown in Figure 5(m).…”

Section: Cnfet-fcoa-based Peak Detectormentioning

confidence: 99%

Section: Cnfet-fcoa-based Peak Detectormentioning

confidence: 99%

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Design of Analog Signal Processing Applications Using Carbon Nanotube Field Effect Transistor-Based Low-Power Folded Cascode Operational Amplifier

Bendre

Kureshi²,

Waykole

2018

Journal of Nanotechnology

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Modeling of density of state for polyethylene–nanotubes nanocomposites

2021

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At the nanoscale system, the efficiency of carbon nanotube (CNT) reinforcement between the CNTs and polymer matrices in terms of interfacial load transferring is assessed for both nonfunctionalized and functionalized interfaces. The simulations of the mechanical properties (stress-strain) of polyethylene (PE)/CNT nanocomposites by the molecular dynamics are currently an area of discussion in the literature. In this work, PE considered as a thermoplastic material is studied, in which the characterization of its nanoscale load transfer has been carried out through the classification of representative nanoscale interface elements for nonfunctionalized CNTs for the diverse values of lengths and diameters. First, the main evaluations based on the density functional theory and the molecular dynamics method were used with the aim to examine the effect of PE monomers. Then, the effect of the diameter of CNTs with nonfunctionalization content on the electronic and mechanical properties of single-walled carbon nanotubes was examined. The findings reveal that the density of states highlights the absence of orbital hybridization between the PE monomers and nanotubes, whereas the Mulliken charge analysis depicts that the PE polymer produces a positive charge that is directly proportional to the number of monomers with many chains of PE and different diameters of CNTs. The decrease in diameters implies an increase in nanocomposites stress. In addition, the results show that the reinforcements in the longitudinal direction are more promising than those in the transverse direction.

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