| Autor: |
Oliver Kieler, Hao Tian, Rolf-Werner Gerdau, Johannes Kohlmann, Ralf Behr, B. Egeling |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
2020 Conference on Precision Electromagnetic Measurements (CPEM). |
| DOI: |
10.1109/cpem49742.2020.9191734 |
| Popis: |
Overdamped Josephson junctions for AC voltage standards are realized with Nb x Si 1-x barrier junctions at PTB. The characteristic parameters of the junctions can be tuned over a wide range by adjusting the Nb content and the thickness of the barrier. For the pulse-driven Josephson Arbitrary Waveform Synthesizer (JAWS), series arrays of up to 15,000 Josephson junctions have been fabricated using junction stacks containing five Josephson junctions. In addition, two types of on-chip power dividers have been investigated at PTB, namely Wilkinson and serial-parallel power dividers, respectively. These developments aim for further increasing the number of Josephson junctions on a single chip and thus for increasing the output voltage. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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