Nonlinear Behavior of Electronic Components Characterized With Precision Multitones From a Josephson Arbitrary Waveform Synthesizer

Toonen, Ryan C.; Benz, Samuel P.

doi:10.1109/tasc.2009.2019051

Cited by 34 publications

(22 citation statements)

References 11 publications

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“…The circuits and systems have been referred to as either AC Josephson Voltage Standards (ACJVS) when used for voltage calibrations or JAWSs when the emphasis is on the generation of distortion-free multitone waveforms. One JAWS version called a quantized voltage noise source generates a comb of equal-amplitude random-phase harmonics to produce a pseudonoise waveform that is used to calibrate low-noise amplifier chains in electronic primary temperature standards based on Johnson noise thermometry [13], [24]. The ACJVS systems, in particular, are designed to generate dc and low-frequency (< 1 MHz) sine-wave voltages in order to calibrate ac voltage detectors such as thermal converters and transfer standards.…”

Section: Introductionmentioning

confidence: 99%

Pulse-Bias Electronics and Techniques for a Josephson Arbitrary Waveform Synthesizer

Benz

Waltman

2014

IEEE Trans. Appl. Supercond.

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The Josephson arbitrary waveform synthesizer (JAWS) is a series array of thousands of superconducting Josephson junctions that are biased by current pulses such that the array produces voltage waveforms with quantum accuracy. Intrinsically accurate voltage waveforms synthesized with the quantized pulses from Josephson junctions were first demonstrated in 1996. Ten years later, a commercial ac standard was calibrated at an output root-mean-square (RMS) amplitude of 100 mV with the first practical superconducting digital-to-analog converter. Since then, many different bias techniques, pulse-drive electronics, and device technology have been developed and improved in order to achieve a maximum of 138 mV output RMS voltage per Josephson array. In this paper, we report new bias electronics and demonstrate two new pulse-bias techniques. The first technique has demonstrated 250 mV output RMS voltage per 6400-junction array and may enable a practical 1 V system with only four arrays. The second bias technique reduces inductance-related error signals at the signal frequency and should reduce systematic errors for waveforms with frequencies greater than 1 MHz.

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Section: Introductionmentioning

confidence: 99%

Pulse-Bias Electronics and Techniques for a Josephson Arbitrary Waveform Synthesizer

Benz

Waltman

2014

IEEE Trans. Appl. Supercond.

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“…The effect of the distortion on the ratio-measurement variance will decrease as the density of QVNSsynthesized tones increases, because the amplitudes of the distortion products decrease as the tone amplitudes decrease (e.g., the amplitude of the third-order intermodulation distortion is ሺʹ݂ ଵ െ ݂ ଶ ሻ̱ܸሺ߂݂ ሻ ଷȀଶ , where f 1 is the frequency of the fundamental tone and f 2 is the frequency of the second tone). This results in the spectral ratio variance decreasing for a larger number of tones [12,13].…”

Section: Figurementioning

confidence: 99%

Johnson-noise thermometry based on a quantized-voltage noise source at NIST

Pollarolo¹,

Jeong²,

Benz³

et al. 2013

AIP Conference Proceedings

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Johnson Noise Thermometry is an electronic approach to measuring temperature. For several years, NIST has been developing a switching-correlator-type Johnson-noise thermometer that uses a quantized voltage noise source as an accurate voltage reference. When this method is used to measure resistors at the triple-point of water, the system creates a direct electronic method for determining the ratio of the Boltzmann constant k to the Planck constant h. In 2010, NIST optimized the JNT system for use with 100 : sense resistors and produced a determination for k with a relative standard uncertainty of 12u10 -6 . In order to further validate and improve the measurement method, we modified the system to operate with a 200 : resistor source instead of the 100 : source. In this paper, we summarize the technical challenges and achievements to date and project what is achievable in the near future.

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“…Single-or multi-tone signals were, in addition, used for the characterization of electronic components like filters or a/d converters (cf. Toonen and Benz, 2009). The use of pulse-driven arrays was also suggested in combination with a binary-divided array; the spectrum of the pulsedriven array is adjusted to modify the spectrum of the 1 V or 10 V signal generated by the binary divided array .…”

Section: Pulse-driven Arraysmentioning

confidence: 99%