Design of a Fast Digital Double Relaxation Oscillation SQUID (corrected)

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Podt, M. and Mieog, A.J. and Flokstra, J. and Rogalla, H. (2001) Design of a Fast Digital Double Relaxation Oscillation SQUID (corrected). IEEE Transactions on Applied Superconductivity, 11 (2). pp. 4054-4057. ISSN 1051-8223

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Abstract:A fast digital Double Relaxation Oscillation SQUID (DROS) with a relaxation oscillation frequency of 100 MHz has been developed. The digital DROS incorporates a DROS and a superconducting up-down counter that supplies the feedback flux. The major advantage of a DROS is that the relaxation oscillations generate an on-chip clock signal and therefore, no external clock is required. In order to maximize the slew rate without compromising the sensitivity, the quantization unit of the feedback flux was adapted to the flux noise of the DROS. This resulted in a designed flux slew rate of 5·106 ¿0/s. We will discuss the design optimization, numerical simulations, the layout and some experimental results of the digital DROS
Item Type:Article
Copyright:© 2001 IEEE
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/36162
Official URL:http://dx.doi.org/10.1109/77.947384
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