| Zugriffsnummer | 46121 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Linearity measurements of critical Johnson noise thermometer components with low-distortion multitones from a Josephson arbitrary waveform synthesizer |
| Autor(in); Institution |
Kraus, Marco; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
Drung, Dietmar; 7.6, Kryosensorik, PTB-Berlin
Krause, Christian; 7.6, Kryosensorik, PTB-Berlin
Palafox, Luis; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
Behr, Ralf; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
|
| Quelle/Jahr | Measurement Science and Technology: 32 (2021), 6, 1 - 12 |
| Artikelnummer | 065006 |
| ISSN | 0957-0233 (PRINT) ; 1361-6501 (ONLINE) |
| DOI | |
| Verlag | Bristol: IOP Publishing |
| Freie Schlagworte | digital-to-analog conversion ; non-linearity ; Josephson voltage standard ; quantization ; signal synthesis ; voltage measurement |
| Zusammenfassung | Quantum-based and low-distortion multitone signals from a Josephson arbitrary waveform synthesizer are used to calibrate critical noise thermometer components between 8 and 240 kHz at increased input noise levels. The example signal path includes a 24-bit ΣΔ analog-to-digital converter (ADC) and a prototype amplifier for Physikalisch-Technische Bundesanstalt's new noise thermometer. The signals consist of odd harmonics of the pattern repetition frequency with growing tone spacing, minimizing the influence of intermodulation distortion during calibration. After a detailed description of the calibration procedure, we compare the multitone spectra with growing tone spacing to ones with equally spaced tones. For the example signal path, gain nonlinearities better than ±2 μV/V at input rms noise levels between 9.7 and 465 μV are experimentally demonstrated. Furthermore, we investigate the effect of dither and applied offset voltage on the non-linearity of the ADC. |
| Themenbereich der Metrologie | Elektrizität und Magnetismus |
| Forschungsprojekt | internes Projekt: elektronisches Klevin |
Zitierung
Kraus, M., Drung, D., Krause, C., Palafox, L., & Behr, R. (2021). Linearity measurements of critical Johnson noise thermometer components with low-distortion multitones from a Josephson arbitrary waveform synthesizer. Measurement Science and Technology, 32(6), 1–12. https://doi.org/10.1088/1361-6501/abd1fc