HTS pulse-stretcher and second order modulator: design and first results


Roussy, A. and Karthikeyan, S. and Oomen, I. and Ortlepp, Th. and Sujiono, E.H. and Brinkman, A. and Rogalla, H. (2005) HTS pulse-stretcher and second order modulator: design and first results. IEEE Transactions on Applied Superconductivity, 15 (2). pp. 457-460. ISSN 1051-8223

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Abstract:One of the remaining challenges in the application of superconducting electronics is the interfacing between superconducting and semiconducting environments. The voltage and speed mismatch between RSFQ pulses and semiconducting read-out electronics makes it necessary to amplify as well as stretch the RSFQ pulses. Moreover, circuits based on HTS (High Temperature Superconductor) technology are very attractive since they can operate under considerably relaxed cooling effort, which is one of the main problems with LTS (Low Temperature Superconductor) circuits. Within the European project SuperADC, a HTS second order sigma delta modulator and a pulse stretcher, used as an interface between the modulator and the first semi-conducting amplifier stage, have been designed at Twente University and will be presented here.
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Copyright:©2005 IEEE
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