Microwave Measurements on YBaCuO Thin Films and Realisation of Microwave Superconducting Devices

P. Lepercq; J.C. Carru; F. Mehri; Y. Crosnier; N. Bourzgui; I. François; J. De Boeck; G. Borghs

doi:doi:10.1051/jp4:1996359

Numéro		J. Phys. IV France Volume 06, Numéro C3, Avril 1996 WOLTE 2 Proceedings of the Second European Workshop on Low Temperature Electronics


Page(s)		C3-391 - C3-396
DOI		https://doi.org/10.1051/jp4:1996359

WOLTE 2
Proceedings of the Second European Workshop on Low Temperature Electronics

J. Phys. IV France 06 (1996) C3-391-C3-396
DOI: 10.1051/jp4:1996359

Microwave Measurements on YBaCuO Thin Films and Realisation of Microwave Superconducting Devices

P. 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

Abstract
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.