Superconducting quantum interference device amplifiers at gigahertz frequencies
- 12 May 2003
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 82 (19), 3266-3268
- https://doi.org/10.1063/1.1572970
Abstract
A series of five dc superconducting quantum interference devices (SQUIDs) have been operated as microstrip amplifiers at frequencies ranging from 2.2 to 7.4 GHz. In these devices, the signal is connected between the SQUID washer and coil, which acts as a microstrip resonator. The gain measured at 4.2 K ranged from 12±1 to 6±1 dB. The noise temperature of three devices at 4.2 K in the frequency range 2.2–4 GHz was between 1 and 2 K, and the saturation temperature was between 150 and 250 K. Applications of these devices include readout for axion detectors, and intermediate-frequency amplifiers for superconductor–insulator–superconductor and hot-electron bolometer mixers.Keywords
This publication has 11 references indexed in Scilit:
- Large-scale microwave cavity search for dark-matter axionsPhysical Review D, 2001
- Superconducting quantum interference device as a near-quantum-limited amplifier at 0.5 GHzApplied Physics Letters, 2001
- The superconducting quantum interference device microstrip amplifier: Computer modelsJournal of Applied Physics, 2000
- Integrated superconducting receiversSuperconductor Science and Technology, 2000
- Radio-frequency amplifier based on a niobium dc superconducting quantum interference device with microstrip input couplingApplied Physics Letters, 1998
- Application of superconducting quantum interference devices to nuclear magnetic resonanceReviews of Modern Physics, 1998
- DC SQUIDs as radiofrequency amplifiersJournal of Low Temperature Physics, 1985
- Quantum detection at millimeter wavelengthsReviews of Modern Physics, 1985
- Ultra-low-noise tunnel junction dc SQUID with a tightly coupled planar input coilApplied Physics Letters, 1982
- dc SQUID: Noise and optimizationJournal of Low Temperature Physics, 1977