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Properties of a high-Tc dc SQUID radiofrequency amplifier

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5 Author(s)
Kalaboukhov, A.S. ; Dept. of Microelectron. & Nanoscience, Chalmers Univ. of Technol., Moscow, Russia ; Tarasov, M.A. ; Lohmus, A. ; Ivanov, Z.G.
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We present an experimental investigation of a radiofrequency amplifier based on a bicrystal high-Tc dc SQUID designed for the frequency range 500-3000 MHz. The SQUID input coil comprises only one layer of a normal metal forming open-ended microstrip line. Both dc and microwave properties were investigated and analyzed. Maximum power gain was found to be 16 dB at 520 MHz for a SQUID with 8 turn input coil.

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Applied Superconductivity, IEEE Transactions on  (Volume:13 ,  Issue: 2 )