Wideband MgB2 Hot-Electron Bolometer Mixers: IF Impedance Characterisation and Modeling

Bevilacqua, Stella,1981Chalmers tekniska högskola,Chalmers University of Technology (författare)

In this paper we present a method for low signal S11 parameter vector measurements of a cryogenic device in the microwave frequency range. In particular, the intermediate frequency (IF) impedance of MgB2 Hot-electron Bolometer (HEB) mixers was investigated over a frequency range of 100 MHz to 10 GHz. A new cryogenic calibration technique, which employs the HEB as a calibration kitandrequires two consecutive thermal cycles, was developed for this purpose.The real part of measured IF impedance showed a strong correlationwith the differential resistance (dV/dI) obtained from the dc I-V curves while the imaginary partwas capacitive for almost the entire frequency range.

Novoselov, Evgenii,1988Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)evgenii (författare)
Cherednichenko, Serguei,1970Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)serguei (författare)
Shibata, HiroyukiNippon Telegraph and Telephone Corporation (författare)
Tokura, YasuhiroNippon Telegraph and Telephone Corporation (författare)
Chalmers tekniska högskolaNippon Telegraph and Telephone Corporation (creator_code:org_t)

Ingår i:IEEE Transactions on Applied Superconductivity26:3, s. 2300105-1558-25151051-8223

Av författaren/redakt...: Bevilacqua, Stel ...; Novoselov, Evgen ...; Cherednichenko, ...; Shibata, Hiroyuk ...; Tokura, Yasuhiro

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