Superconducting low-noise oscillator

Patent · Tue Jun 02 04:00:00 EDT 1992

OSTI ID:7234545

Riebman, L

This patent describes a cryogenic oscillator having low phase noise and low noise. It comprises resonant circuit means formed of superconducting material for generating a signal at a desired frequency; linear amplifier means electrically connected to the resonant circuit means at first and second locations thereon; limiter means electrically connected to the resonant circuit means at a third location thereon; and buffer amplifier means for applying the signal generated by the resonant circuit means to a load and electrically connected to the resonant circuit means at a fourth location thereon. This patent also describes a method of minimizing phase noise and 1/f noise in an oscillator circuit of the type having a resonant circuit driving a load and at least a linear amplifier connected to the resonant circuit defining a closed loop having a loop gain greater than unity, and having a limiter for stabilizing the oscillator. It comprises connecting between the resonant circuit and the load a buffer amplifier and connecting the linear amplifier and the buffer amplifier to the resonant circuit.

• Assignee: American Electronic Lab., Lansdale, PA (United States)
• Patent Number(s): A; US 5118660
• Application Number: PPN: US 7-658285
• OSTI ID: 7234545
• Country of Publication: United States
• Language: English

Related Subjects

665411 -- Basic Superconductivity Studies-- (1992-)
665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLIFIERS
CONTROL
CRITICAL TEMPERATURE
CRYOGENICS
CURRENT LIMITERS
DESIGN
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTRONIC EQUIPMENT
EQUIPMENT
FABRICATION
FREQUENCY CONTROL
MATERIALS TESTING
NOISE
OSCILLATORS
PHYSICAL PROPERTIES
PULSE AMPLIFIERS
STABILIZED SUPERCONDUCTORS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TESTING
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE