Low-noise oscillator using superconducting nonlinear element

Details Low-noise oscillator using superconducting nonlinear element Low-noise oscillator using superconducting nonlinear element

1988-12-30

1990-02-13

Grimm, Siegfried H.

Oscillators

L-c type oscillators

331107S, 505853, H03B 508

Patent

active

049010387

ABSTRACT:
A low-noise oscillator includes a resonator constituted by a coil, a capacitor and a sustaining coil which are made of superconductivity material and maintained at a low temperature below the critical temperature; a linear amplifier which always operates in its linear zone; and a load.
The amplitude of oscillation is stabilized when it has attained a threshold value such that the superconducting material constituting the coil of the resonator becomes progressively resistive under the action of the magnetic field produced by this coil. The coil then dissipates part of the energy injected into the resonator. Since the high-frequency noise of the oscillator is essentially determined by the low-frequency noise of its nonlinear element, the use of superconducting material at low temperature in order to constitute the nonlinear element makes it possible to obtain an oscillator having very low noise.

REFERENCES:
patent: 2725474 (1955-11-01), Ericsson
Journal of Applied Physics, vol. 45, No. 11, Nov. 1974, pp. 5043-5049, American Institute of Physics, New York U.S.; J. W. Baker et al.: "Effects of A Nonuniform Current Distribution on the Kinetic Inductance of a Thin Super-Conducting Film".
Stein, "Application of Superconductivity to Precision Oscillators", Conference Proceedings of the 29th Annual Frequency Control Symposium, Fort Monmouth, N.J., May 29-30, 1975, pp. 321-327.

Affiliated with

Also associated with

Rating

Low-noise oscillator using superconducting nonlinear element does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low-noise oscillator using superconducting nonlinear element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-noise oscillator using superconducting nonlinear element will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1170974