APPLICATION OF SMALL-SIGNAL MODEL TO DC-SQUID CIRCUIT-DESIGN

被引：6

作者：

GEREN, WP

机构：

[1] Boeing Defense & Space Group, Seattle, WA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1995年 / 5卷 / 02期

关键词：

D O I：

10.1109/77.403165

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

As the performance of HTS DC SQUIDs continues to improve, their utilization in RF devices (e.g., amplifiers, nuclear magnetic resonance detectors) having complex circuitry becomes more attractive. To fully realize their potential in this application, accurate and efficient analysis techniques are required to assist the circuit designer. Beginning with measured V-phi and I-V data for the device, we have used the small-signal model to optimize the design of a two-stage low-noise amplifier (LNA) comprised of DC SQUIDs. Optimization criteria were maximum gain and minimum noise figure at the upper band edge. We have shown that the small signal model is an invaluable design tool which provides the analytical performance data needed to optimize the SQUID and its attendant RF circuitry.

引用

页码：2770 / 2773

页数：4

共 11 条

[1]

Clarke J., SQUIDs, Scientific American, 271, (1994)

[2]

Foglietti V., Double dc SQUID for flux-locked-loop operation, Appl. Phys. Lett., 59, pp. 476-478, (1991)

[3]

Hilbert C., Clarke J., DC SQUIDs as radiofrequency amplifiers, J. Low Temp. Phys., 61, pp. 263-280, (1985)

[4]

Enpuku E., Cantor R., Koch H., Modeling the dc superconducting quantum interference device coupled to the multitum input coil. III, J. Appl. Phys., 72, pp. 1000-1006, (1992)

[5]

Welty R.P., Martinis J.M., A series array of DC SQUIDs, IEEE Trans. Magn., 27, pp. 2924-2926, (1991)

[6]

Welty R.P., Martinis J.M., Two-stage integrated SQUID amplifier with series array output, submitted to IEEE Trans. Magn.

[7]

Foglietti V., Stawiasz K.G., Ketchen M.B., Koch R.H., Performance of a flux locked series SQUID array, IEEE Trans. Appl. Superconductivity, 3, pp. 3061-3064, (1993)

[8]

Miklidi A.H., Kingston J.J., Wellstood F.C., Clarke J., Sensitive YBa2Cu3O7-x thin-film magnetometer, Appl. Phys. Lett., 59, pp. 988-990, (1991)

[9]

Martinis J.M., Clarke J., Signal and noise theory for a DC SQUID amplifier, J. Low Temp. Phys., 61, pp. 227-236, (1985)

[10]

Carson J.R., Fry T.C., Variable frequency electric circuit theory with application to the theory of ffequency-modulatiotis, Bell System Technical Journal, 16, 4, (1937)

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