Method and device for determining sideband ratios of...

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G01R 31/00 (2006.01) G01R 23/16 (2006.01) G01R 29/00 (2006.01) G01R 31/316 (2006.01)

Patent

CA 2450841

The present invention provides a method and device for determining the sideband ratio of a superconducting mixer using a comb generator. The method includes the steps of: (a) tentatively adjusting the sideband ratio of a mixer for calibration of an output of the comb generator; (b) determining the signal intensity of a pseudo-celestial signal oscillator for calibration of the output of the comb generator; (c) repeating the steps (a) and (b) to derive the relation between the sideband radio of the mixer for the comb-generator output calibration and the intensity of a pseudo-celestial signal; (d) calibrating the output of the comb generator; and (e) obtaining the sideband ratio of the mixer to be measured.

La présente invention concerne un procédé qui permet de déterminer le rapport de bande latérale d'un mélangeur supraconducteur au moyen d'un générateur en peigne. Le procédé se caractérise en ce que (a) le rapport de bande latérale d'un mélangeur servant à corriger la sortie d'un générateur en peigne est provisoirement ajusté, (b) l'intensité d'un signal d'un oscillateur de signal de corps pseudo-céleste sert à corriger la sortie d'un générateur en peigne, (c) les étapes (a) et (b) sont répétées pour dériver la relation entre le rapport de bande latérale et l'intensité du signal de corps pseudo-céleste, (d) la sortie du générateur en peigne est corrigée et (e) le rapport de bande latérale du mélangeur à mesurer est dérivé.

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