Proceedings of the Second European Workshop on Low Temperature Electronics
J. Phys. IV France 06 (1996) C3-391-C3-396
Microwave Measurements on YBaCuO Thin Films and Realisation of Microwave Superconducting DevicesP. Lepercq1, J.C. Carru1, F. Mehri1, Y. Crosnier1, N. Bourzgui1, I. François2, J. De Boeck1 and G. Borghs2
1 IEMN-DHS, UMR CNRS 9929, Cité Scientifique, BP 69, 59652 Villeneuve d'Ascq Cedex, France
2 IMEC, Kapeldreef 75, 3001 Leuven, Belgium
Two characterisations methods in microwaves are presented. They permit to obtain σ*, Rs and λ for a HTS film without the need of any theoretical model for the superconductivity. The best film tested exhibits at 35GHz and 78K a Rs value of 10mΩ, at least three times lower than the copper one. A quasi-integrated oscillator has been realised on a 1cm2 area : it oscillates at 12GHz and close to liquid nitrogen temperature. At lower temperatures an output power of +3dBm and a phase noise of -100dBc/Hz at 100kHz from the carrier have been recorded.
© EDP Sciences 1996