发明名称 |
Multiple squid direct signal injection device formed on a single layer substrate |
摘要 |
A low-noise directly coupled dc SQUID magnetometer is disclosed. The magnetometer provides for single layer fabrication and is particularly applicable to high-Tc superconductors operating at 77 Kelvin. A pair of dc SQUIDs are connected and biased in series such that the output voltage modulation with applied flux of the dual SQUID magnetometer, is double that of a single SQUID magnetometer. The bias current is applied to one SQUID and removed from the second SQUID of the pair. The magnetometer pick-up coil is directly coupled to the SQUID pair, providing for coherent modulation of the series-connected SQUIDS and a reduction of flux density noise of the device by a factor of 1/ 2ROOT +E,rad 2+EE .
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申请公布号 |
US5767043(A) |
申请公布日期 |
1998.06.16 |
申请号 |
US19950393131 |
申请日期 |
1995.02.21 |
申请人 |
CONDUCTUS, INC. |
发明人 |
CANTOR, ROBIN H.;BURNS, MICHAEL J. |
分类号 |
G01R33/035;(IPC1-7):H01L39/00 |
主分类号 |
G01R33/035 |
代理机构 |
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代理人 |
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地址 |
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