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5 GHz Josephson A/D converter |
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| Authors: | Ohara S Imamura T Hasuo S |
| Affiliation: | Fujitsu Lab. Ltd., Atsugi; |
| Abstract: | A four-bit A/D convertor using Nb/AlOx/Nb Josephson junctions was fabricated. The circuit was designed to preserve the matching of characteristic impedances at all nodes. Four-bit A/D conversion was confirmed at a low frequency. The A/D convertor correctly operated at up to 5 GHz for two-bit conversion |
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