Search results for "Flicker noise"

showing 2 items of 22 documents

Phase-Noise and Amplitude-Noise Measurement of DACs and DDSs

2019

This article proposes a method for the measurement of Phase Noise (PN, or PM noise) and Amplitude Noise (AN, or AM noise) of Digital-to-Analog Converters (DAC) and Direct Digital Synthesizers (DDS) based on modulation-index amplification. The carrier is first reduced by a controlled amount (30-40 dB) by adding a reference signal of nearly equal amplitude and opposite in phase. Then, residual carrier and noise sidebands are amplified and sent to a conventional PN analyzer. The main virtues of our method are: (i) the noise specs of the PN analyzer are relaxed by a factor equal to the carrier suppression ratio; and, (ii) the capability to measure the AN using a PN analyzer, with no need for th…

[SPI.OTHER]Engineering Sciences [physics]/OtherSpectrum analyzerPhysics - Instrumentation and DetectorsAcoustics and UltrasonicsAtomic Physics (physics.atom-ph)AcousticsFast Fourier transformFOS: Physical sciences02 engineering and technology01 natural sciencesPhysics - Atomic PhysicsAmplitude modulationBackground noise0103 physical sciencesPhase noiseFlicker noise[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]Electrical and Electronic Engineering010301 acousticsInstrumentationPhysicsNoise measurementFlicker010401 analytical chemistryInstrumentation and Detectors (physics.ins-det)Converters021001 nanoscience & nanotechnologyResidual carrier[PHYS.PHYS.PHYS-GEN-PH]Physics [physics]/Physics [physics]/General Physics [physics.gen-ph]0104 chemical sciencesNoiseAmplitudeDevice under test0210 nano-technology
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Generalized Noise Study of Solid-State Nanopores at Low Frequencies.

2017

Nanopore technology has been extensively investigated for analysis of biomolecules, and a success story in this field concerns DNA sequencing using a nanopore chip featuring an array of hundreds of biological nanopores (BioNs). Solid-state nanopores (SSNs) have been explored to attain longer lifetime and higher integration density than what BioNs can offer, but SSNs are generally considered to generate higher noise whose origin remains to be confirmed. Here, we systematically study low-frequency (including thermal and flicker) noise characteristics of SSNs measuring 7 to 200 nm in diameter drilled through a 20-nm-thick SiNx membrane by focused ion milling. Both bulk and surface ionic curren…

noiseta221Analytical chemistryIonic bondingBioengineering02 engineering and technologyElectrolyte010402 general chemistry01 natural sciencesNoise (electronics)Flicker noiseInstrumentationFluid Flow and Transfer Processesta114ChemistryProcess Chemistry and TechnologyFlicker021001 nanoscience & nanotechnology0104 chemical sciencesNanoporenanopore technologyChemical physicssolid-state nanoporesIon milling machine0210 nano-technologyVoltageACS sensors
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