| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Ultra fast differential transimpedance digital amplifier for superconducting circuits | US11824419 | 2007-06-29 | US07570075B2 | 2009-08-04 | Deepnarayan Gupta; Amol Inamdar |
| Supercooled electronics often use Rapid Single Flux Quantum (RSFQ) digital circuits. The output voltages from RSFQ devices are too low to be directly interfaced with semiconductor electronics, even if the semiconductor electronics are cooled. Techniques for directly interfacing RSFQ digital circuits with semiconductor electronics are disclosed using a novel inverting transimpedance digital amplifier in conjunction with a non-inverting transimpedance digital amplifier to create a differential transimpedance digital amplifier that permits direct interfacing between RSFQ and semiconductor electronics. | ||||||
| 122 | Ultra fast differential transimpedance digital amplifier for superconducting circuits | US11824419 | 2007-06-29 | US20090002014A1 | 2009-01-01 | Deepnarayan Gupta; Amol Inamdar |
| Supercooled electronics often use Rapid Single Flux Quantum (RSFQ) digital circuits. The output voltages from RSFQ devices are too low to be directly interfaced with semiconductor electronics, even if the semiconductor electronics are cooled. Techniques for directly interfacing RSFQ digital circuits with semiconductor electronics are disclosed using a novel inverting transimpedance digital amplifier in conjunction with a non-inverting transimpedance digital amplifier to create a differential transimpedance digital amplifier that permits direct interfacing between RSFQ and semiconductor electronics. | ||||||
| 123 | Method for amplifying voltage in Josephon junction | US978445 | 1997-11-25 | US5959483A | 1999-09-28 | Seon Hee Park; Seung Hwan Kim; Chang Su Ryu |
| The present invention discloses a method for amplifying voltage to which a test will be given in Josephon junction having external current, and more particularly, to a method for amplifying voltage in Josephon junction in which the voltage in a simple Josephon junction having an external current can be amplified by inserting an external colored noise into the external current. | ||||||
| 124 | Cryogenically-cooled radio-frequency power amplifier | US431361 | 1989-11-03 | US5010304A | 1991-04-23 | Otward M. Mueller; William A. Edelstein |
| A cryogenically-cooled RF power amplifier utilizes a plurality of metal-oxide-semiconductor field-effect transistors configured on a heat sink having at least one surface in contact with a cryogenic fluid, and having input means for coupling RF driving power into the plurality of cryogenically-cooled MOSFETs and output means for coupling an amplified level of RF power from the cooled MOSFETs to an antenna. | ||||||
| 125 | Radiofrequency amplifier based on a dc superconducting quantum interference device | US604547 | 1984-04-27 | US4585999A | 1986-04-29 | Claude Hilbert; John M. Martinis; John Clarke |
| A low noise radiofrequency amplifier (10), using a dc SQUID (superconducting quantum interference device) as the input amplifying element. The dc SQUID (11) and an input coil (12) are maintained at superconductivity temperatures in a superconducting shield (13), with the input coil (12) inductively coupled to the superconducting ring (17) of the dc SQUID (11). A radiofrequency signal from outside the shield (13) is applied to the input coil (12), and an amplified radiofrequency signal is developed across the dc SQUID ring (17) and transmitted to exteriorly of the shield (13). A power gain of 19.5.+-.0.5 dB has been achieved with a noise temperature of 1.0.+-.0.4 K. at a frequency of 100 MHz. | ||||||
| 126 | Asymmetric superconducting quantum interference device in a linear amplifier circuit | US480987 | 1983-03-31 | US4509018A | 1985-04-02 | Meir Gershenson |
| A superconducting quantum interference device (SQUID) is direct current biased through physical connections asymmetric to, and preferably maximally asymmetric to, the two Josephson junctions. The asymmetric SQUID so created is, responsively to such physical asymmetry, biased for operation in the linear region of the input magnetic flux/output (voltage or current) device response curve. A resistance of specified value is connected in parallel, or shunt, to the parasitic bridge capacitance of the asymmetric SQUID in order to minimize hysteresis. Two asymmetric SQUIDS of opposite asymmetry are serially connected as a push-pull linear amplifier stage which exhibits zero output (voltage or current) at zero input magnetic flux, and which is specifiable in parameters of construction so as to exhibit optimum linearity of response about such point. Plural successive such linear amplifier stages are connected by an LC filter, which filter is lowpass to the Josephson oscillation frequency, in order to form a linear amplifier entirely with the cyrogenic environment and with a bandwidth of the order to D.C. to 10.sup.9 Hertz. | ||||||
| 127 | Injection locked Josephson oscillator systems | US562294 | 1975-03-26 | US3970965A | 1976-07-20 | Sidney Shapiro; Charles V. Stancampiano |
| Various injection locking arrangements employing Josephson oscillators are disclosed for achieving signal amplification, frequency conversion and the detection of extremely low level signals at high frequency ranges. | ||||||
| 128 | Josephson junction amplifier | US3783402D | 1972-06-28 | US3783402A | 1974-01-01 | VAN DER ZIEL A; CHOE H |
| The invention disclosed herein utilizes the Josephson tunneling effect to provide an amplifier having unique characteristics. The Josephson tunneling effect relates to a supercurrent flow thru a thin barrier between two superconductors by quantum mechanical tunneling of electron pairs; in other words, current can flow with no voltage applied between the superconductors. The dc quantum interference effect can produce thru the use of an external magnetic field a large change in barrier current by tunneling and is used herein to produce an amplifier.
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| 129 | Magnetic field coupled superconducting quantum interference system | US3573759D | 1969-01-24 | US3573759A | 1971-04-06 | ZIMMERMAN JAMES E; SILVER ARNOLD H |
| This disclosure relates to an electrical circuit component including a superconductive quantum interference device having a loop of superconducting material with a weak link positioned therein. The loop of superconducting material and the weak link enclose an area for the reception of magnetic flux. Means are positioned adjacent the superconductive quantum interference device for producing a varying magnetic field at the device to induce a current therein. The magnitude of the varying magnetic field is sufficient to induce a critical current in the weak link. As a result, the current induced in the superconductive quantum interference device alternately increases and decreases as the number of flux quanta changes in the area enclosed by the superconducting material and weak link. The disclosure also relates to a process of inducing a nonlinear electric current in a superconductive quantum interference device having a loop of superconducting material with a weak link positioned therein. It comprises placing this device in a superconducting state and locating an inductive member magnetically adjacent thereto. A varying current is applied to the inductive device to induce a current in the superconductive quantum interference device. The magnitude of this varying current is sufficient to induce a critical current in the weak link, and, as a result, the current alternately increases to the value of the critical current through the weak link and decreases to some lower value as the number of flux quanta changes in the area enclosed by the superconducting material and weak link.
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| 130 | Hall-voltage generator unit with amplifying action, and method of producting such unit | US18537762 | 1962-04-05 | US3319173A | 1967-05-09 | WALTER ENGEL |
| 131 | Four-terminal solid state superconductive device with control current flowing transverse to controlled output current | US12824861 | 1961-07-31 | US3204115A | 1965-08-31 | PARMENTER ROBERT H |
| 132 | Electrical circuits employing superconductor devices | US6060260 | 1960-10-05 | US3181080A | 1965-04-27 | CHERRY WILLIAM H |
| 133 | Solid state superconductor triode | US13189261 | 1961-08-16 | US3155886A | 1964-11-03 | PANKOVE JACQUES I |
| 134 | Semiconductor electrical apparatus | US66759757 | 1957-06-24 | US3042853A | 1962-07-03 | STEELE MARTIN C |
| 135 | Semiconductor cryistor circuit | US64948257 | 1957-03-29 | US3042852A | 1962-07-03 | CARL STEELE MARTIN |
| 136 | Superconductor circuitry | US67723957 | 1957-08-09 | US3015041A | 1961-12-26 | YOUNG DONALD R |
| 137 | Amplifier | US68422957 | 1957-09-16 | US2979668A | 1961-04-11 | DUNLAP JR WILLIAM CRAWFORD |
| 138 | Oscillation circuit with superconductor | US17771550 | 1950-08-04 | US2725474A | 1955-11-29 | ARVID ERICSSON ERIC; OSSIAN JORGENSEN ANDERS; LAMBERT OVERBY SUNE |
| 139 | Means for controlling direct currents. | US1914864189 | 1914-09-29 | US1131251A | 1915-03-09 | LANNING CHARLES D |
| 140 | Relay. | US1130654D | US1130654A | 1915-03-02 | ALLENSWORTH HARRY R | |
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