Method and device for determining sideband ratio of...

Details Method and device for determining sideband ratio of... Method and device for determining sideband ratio of...

2006-02-21

2006-02-21

Vo, Nguyen T. (Department: 2685)

Telecommunications

Transmitter and receiver at separate stations

Single or vestigial sideband system

C455S203000, C455S226400, C324S076410

Reexamination Certificate

active

07003262

ABSTRACT:
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.

REFERENCES:
patent: 3644846 (1972-02-01), Bridges et al.
patent: 359194543 (1984-11-01), None
patent: 2002-162659 (2002-06-01), None
Burke, P.J. et al., Length scaling of bandwidth and noise in hot-electron superconducting mixers Appl. Phys. Lett. vol. 68, No. 23, 1996, pp. 3344 to 3346.

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