Josephson voltage standard based on single-flux-quantum voltage multipliers
Josephson voltage standard based on single-flux-quantum voltage multipliers
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基于单通量量子电压倍增器的约瑟夫森电压标准
DOI：
10.1109/77.160152
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发表时间：
1992
影响因子：
1.8
通讯作者：
C. Hamilton
中科院分区：
文献类型：
--
作者：
C. Hamilton
提出了一种约瑟夫森单磁通量子电压/频率倍增器电路作为新一代电压标准的基本组成部分。该电路利用磁耦合使一系列独立结振荡器与约瑟夫森传输线中的磁通量同步。这些电路的级联可以将任意低的输入频率乘以电路的频率限制（约=250 GHz），然后将约30000个振荡器上的电压相加，以产生高达10 V的精确电压。由于振荡器可以通过偏置电流打开和关闭，因此输出电压可以快速编程。一个完整的电压标准可编程的设计，在1.2 μ V的增量，最大为10 V的建议。使用现有的制造技术，该电路将覆盖约1cm/sup 2/的衬底面积，并使用67210个结。<<ETX>>
A Josephson single-flux-quantum voltage/frequency multiplier circuit is proposed as the basic building block for a new generation of voltage standards. The circuit uses magnetic coupling to synchronize a series array of independent junction oscillators to the flux flow in a Josephson transmission line. A cascade of these circuits can multiply an arbitrarily low input frequency up to the frequency limit of the circuit ( approximately=250 GHz) and then add the voltages across approximately 30000 oscillators to generate precise voltages up to 10 V. Because the oscillators can be switched on and off with a bias current, the output voltage is rapidly programmable. A complete design for a voltage standard programmable in 1.2- mu V increments to a maximum of 10 V is proposed. Using existing fabrication technology, the circuit would cover a substrate area of about 1 cm/sup 2/ and use 67210 junctions.<<ETX>>