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1. 发明授权

US5767043A Multiple squid direct signal injection device formed on a single layer substrate 失效
标题翻译：多个鱿鱼直接信号注入装置形成在单层基板上
公开(公告)号：US5767043A
公开(公告)日：1998-06-16
申请号：US393131
申请日：1995-02-21
申请人： Robin H. Cantor , Michael J. Burns
发明人： Robin H. Cantor , Michael J. Burns
IPC分类号： G01R33/035 , H01L39/00
CPC分类号： G01R33/0358 , Y10S505/846
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-T.sub.c 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/.sqroot.2.
摘要翻译：公开了一种低噪声直接耦合的直流SQUID磁强计。磁力计提供单层制造，特别适用于工作在77开尔文的高Tc超导体。一对直流SQUID串联连接和偏置，使得双重SQUID磁力计的施加磁通量的输出电压调制是单个SQUID磁力计的两倍。偏置电流施加到一个SQUID并从该对的第二SQUID中移除。磁力计拾取线圈直接耦合到SQUID对，为串联连接的SQUIDS提供相干调制，并将器件的磁通密度噪声降低1 / 2ROOT + E，rad 2 + EE。

2. 发明授权

US5656937A Low-noise symmetric dc SQUID system having two pairs of washer coils and a pair of Josephson junctions connected in series 失效
标题翻译：具有两对垫圈线圈和一对串联连接的约瑟夫逊结的低噪声对称直流SQUID系统
公开(公告)号：US5656937A
公开(公告)日：1997-08-12
申请号：US478061
申请日：1995-06-07
申请人： Robin H. Cantor
发明人： Robin H. Cantor
IPC分类号： G01R33/035 , G01R33/02 , H01L21/00 , H01L39/22
CPC分类号： G01R33/0354 , Y10S505/846
摘要： A multiple loop dc SQUID configuration with input and modulation circuitry configured for high-symmetry and low-noise operation is disclosed. The configuration is adaptable to implementation using standard thin film circuit fabrication technology. The SQUID inductance is defined by a plurality of washer-shaped thin superconducting films symmetrically oriented on a substrate and connected in series through a pair of Josephson junctions to form a multiple-washer gradiometric structure. The series connection arrangement also minimizes the number of required input and output terminal pads. Bias and modulation conductors are configured so as to prevent magnetic fields produced by currents flowing therethrough from coupling to the SQUID, and the modulation and input coil portions of the SQUID circuit are symmetrically configured to minimize signal coupling therebetween. A method of parameter selection for the input and modulation circuit portions of the SQUID configuration is disclosed which establishes a well-defined resonance point for the SQUID, within which low-noise operation is possible.
摘要翻译：公开了一种具有配置用于高对称和低噪声操作的输入和调制电路的多回路直流SQUID配置。该配置适用于使用标准薄膜电路制造技术的实现。 SQUID电感由多个垫片状薄型超导薄膜限定，对称地定向在基板上，并通过一对约瑟夫逊结串联连接，形成多重洗涤器梯度结构。串联连接布置还使所需的输入和输出端子焊盘的数量最小化。偏置和调制导体被配置为防止由流过SQUID的电流产生的磁场，并且SQUID电路的调制和输入线圈部分被对称地配置成最小化其间的信号耦合。公开了一种用于SQUID配置的输入和调制电路部分的参数选择方法，其为SQUID建立了明确的谐振点，在该谐振点内可以进行低噪声运算。

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