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首页> 外文期刊>IEEE Transactions on Applied Superconductivity >Josephson voltage standard microwave circuits fabricated in a modified all-niobium technology for operation at low drive frequencies
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Josephson voltage standard microwave circuits fabricated in a modified all-niobium technology for operation at low drive frequencies

机译：约瑟夫森（Josephson）电压标准微波电路，采用改进的全铌技术制造，可在低驱动频率下运行

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摘要

A resonant type of cryoelectronic microwave circuit for the generation of frequency-scaled Josephson voltages is presented. The circuits consist of superconducting microstripline resonators with series arrays of Josephson tunnel junctions located on the microwave current antinodes. This microwave design was chosen to obtain highly accurate Josephson voltages at low microwave power levels and low drive frequencies. The resonator circuits have been fabricated in both niobium-lead and all-niobium technology. At present, we have observed long-term stable Josephson voltages up to 0.75 V for niobium-lead circuits with 1320 junctions and 0.66 V for all-niobium circuits with 1456 junctions, respectively.
机译：提出了一种谐振型的低温电子微波电路，用于产生频率缩放的约瑟夫森电压。该电路由超导微带线谐振器组成，该微带线谐振器具有位于微波电流波腹上的约瑟夫森隧道结的串联阵列。选择这种微波设计是为了在低微波功率水平和低驱动频率下获得高精度的约瑟夫森电压。谐振器电路已采用铌铅和全铌技术制造。目前，我们已经观察到具有1320个结的铌引线电路的长期稳定的约瑟夫逊电压分别高达0.75 V和具有1456个结的全铌电路的0.66 V分别。

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