US3723755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parametric amplifier
Assignee: Individual
•
Filing: 1970-10-12
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Granted: 1973-03-27
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Expires: 1990-10-12
Abstract
Abstract A high frequency parametric amplifier using the quantum mechanical oscillation associated with transitions of electron pairs between two macroscopic quantum states, (Josephson tunneling) as the source of the idler or pumping frequency. An incoming signal causes the relative phase of two such cross coupled quantum amplifiers to change. This produces a change in the low frequency resistance of the device leading to relatively large output voltages.
Inventors
- 👤 A Morse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:20
CPC Classifications
H; H03; H03F; H03F7/00; G; G01; G01R; G01R19/00; G01R33/00; G01R33/02; G01R33/035; G01R33/0354; H03F2200/00; H03F2200/372; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/855; Y10S505/856; Y10S505/857
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
68 words
A macroscopic quantum circuit device comprising: a first and second superconductor defining a superconducting junction; means for imposing a potential difference between the superconductors to produce oscillating electric field across said junction; means for controlling the amplitude of the oscillations of the field across said junction; and means for selectively absorbing a portion of said oscillations in a manner proportional to the square of the amplitude of oscillation.
Claim 2
Dependent Claim
68 words
A macroscopic quantum circuit device comprising: a first and second superconductor defining a superconducting junction; means for imposing a potential difference between the superconductors to produce oscillating electric field across said junction; means for controlling the amplitude of the oscillations of the field across said junction; and means for selectively absorbing a portion of said oscillations in a manner proportional to the square of the amplitude of oscillation.
Claim 3
Dependent Claim
63 words
A superconducting circuit device comprising: a first superconducting junction having a first and second side; a second superconducting junction having a first and second side; impedance means coupling a side of each of said junctions, and means for coupling a pump frequency oscillating electric field between each of said junctions, said coupling means being connected in parallel circuit relationship with the impedance means.
Claim 4
Dependent Claim
63 words
A superconducting circuit device comprising: a first superconducting junction having a first and second side; a second superconducting junction having a first and second side; impedance means coupling a side of each of said junctions, and means for coupling a pump frequency oscillating electric field between each of said junctions, said coupling means being connected in parallel circuit relationship with the impedance means.
Claim 5
Dependent Claim
41 words
A superconducting circuit device comprising: a first superconducting junction; a second superconducting junction; means for producing electromagnetic oscillation across each superconducting junction, the oscillation across each junction having a characteristic phase; and means for cross coupling the oscillations of each junction.
Claim 6
Dependent Claim
41 words
A superconducting circuit device comprising: a first superconducting junction; a second superconducting junction; means for producing electromagnetic oscillation across each superconducting junction, the oscillation across each junction having a characteristic phase; and means for cross coupling the oscillations of each junction.
Claim 7
Dependent Claim
34 words
The device of claim 3 including means operatively linked to the component for producing a change of phase of the oscillation across one of said junctions relative to the oscillation across the second junction.
Claim 8
Dependent Claim
24 words
The device of claim 3 including output means operatively linked to the component for observing a change in the operating characteristics of the junctions.
Claim 9
Dependent Claim
82 words
A parametric amplifier comprising: first, second, third and fourth superconducting elements; a first superconducting junction defined by said first and second elements; a second superconducting junction defined by said third and fourth elements; circuit means interconnecting said first and third elements; impedance means interconnecting said second and fourth elements; input means connected to one side of said first and second junctions; output means connected across a first one of said junctions; and biasing means connected across the second one of said junctions.
Claim 10
Dependent Claim
82 words
A parametric amplifier comprising: first, second, third and fourth superconducting elements; a first superconducting junction defined by said first and second elements; a second superconducting junction defined by said third and fourth elements; circuit means interconnecting said first and third elements; impedance means interconnecting said second and fourth elements; input means connected to one side of said first and second junctions; output means connected across a first one of said junctions; and biasing means connected across the second one of said junctions.
Claim 11
Dependent Claim
61 words
A macroscopic quantum circuit device comprising: a first quantum oscillator having a first and second side; a second quantum oscillator having a first and second side; means interconnecting one side of each oscillator; impedance means interconnecting the remaining side of each oscillator; and means operatively linked to said component to produce a relative change of frequency in radiation from each oscillator.
Claim 12
Dependent Claim
61 words
A macroscopic quantum circuit device comprising: a first quantum oscillator having a first and second side; a second quantum oscillator having a first and second side; means interconnecting one side of each oscillator; impedance means interconnecting the remaining side of each oscillator; and means operatively linked to said component to produce a relative change of frequency in radiation from each oscillator.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |