SQUID detection of electronic circuits
SQUID detection of electronic circuits
复制标题
电子电路的SQUID检测
DOI：
10.1109/20.92514
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
R. Fagaly
中科院分区：
文献类型：
--
作者：
R. Fagaly
报道了利用超导量子干涉装置(SQUID)磁强计探测电子和机电时钟电路中的音频定时信号。其中1例采用窄带光谱分析确定品质因数(Q)。磁场图显示，磁场源可以局部化到1 mm以下。X射线显示在磁场极大值区域内存在电路元件。将场源解释为磁偶极子，得到m/sub2/值从10/sup-6/am/sup 2/到10/sup-8/am/sup 2/。这项工作表明，SQUID磁强计在定时电路和微处理器的定时信号的非接触检测中具有潜在的应用前景。>；
The author reports on the use of a SQUID (superconducting quantum interference device) magnetometer to detect audio-frequency timing signals from electronic and electromechanical clock circuits. Narrowband spectrum analysis was used to determine the quality factor (Q) in one case. Magnetic field maps indicated that the source of the magnetic fields could be localized to better than 1 mm. X-rays showed the presence of circuit elements in the region of the magnetic field maxima. Interpretation of the field sources as magnetic dipoles yielded m/sub 2/ values ranging from 10/sup -6/ Am/sup 2/ to 10/sup -8/ Am/sup 2/. The implication of this work is that SQUID magnetometers have potential use in noncontact detection of timing signals of timing circuits and microprocessors. >