A high-Tc L-band SQUID amplifier combined with superconductive thin-film filters

Kalabukhov, A.; Tarasov, M.; Stepantsov, E. A.; Gevorgian, Spartak; Deleniv, A.; Ivanov, Z. G.; Снигирев, О.В.; Vendik, O. G.; Mukhanov, Oleg A.

doi:10.1016/s0921-4534(01)01161-3

Cited by 5 publications

(2 citation statements)

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“…While most investigations of microstrip SQUID amplifiers have involved devices made from LTS thin films, it is also possible to use HTS thin-film SQUIDs as rf amplifiers. For example, Tarasov et al [25,26], Prokopenko et al [27] and Kalaboukov et al [28] made microstrip SQUID amplifiers from YBCO thin films. One device achieved a gain of about 7 dB at 1.7 GHz.…”

Section: Coupling the Rf Signal To The Squidmentioning

confidence: 99%

Radio-frequency amplifiers based on dc SQUIDs

Mück

McDermott

2010

Supercond. Sci. Technol.

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SQUIDs are an attractive candidate for the amplification of low-level rf and microwave signals.Compared to semiconductor amplifiers, they offer lower noise and much lower power dissipation. Especially at frequencies below 1 GHz, the improvement in noise temperature compared to the best cold semiconductor amplifiers can be as high as 50; noise temperatures only slightly above the quantum limit have been achieved in this frequency range. This article will review the current status of radio-frequency amplifiers based on dc SQUIDs and provide detailed discussions of amplifier noise temperature, input and output impedance, and nonlinearities.

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Section: Coupling the Rf Signal To The Squidmentioning

confidence: 99%

Radio-frequency amplifiers based on dc SQUIDs

Mück

McDermott

2010

Supercond. Sci. Technol.

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“…With active temperature control, the 60 K stage can be set for a particular temperature within 60-80 K. The low-temperature superconductor (LTS) digital and mixed signal module is located at a 4 K stage. The warmer temperature stage can host hightemperature superconductor (HTS) circuits such as analog filters, semiconductor (e.g., SiGe) or HTS low-noise amplifiers (LNAs) [13], [14]. This stage is also important for I/O cable heat intercept -the cable thermalization [15].…”

Section: Hybrid Technology Hybrid Temperature (Ht 2 ) System Integrationmentioning

confidence: 99%

Superconductor Digital-RF Receiver Systems

Mukhanov

Kirichenko

Vernik

et al. 2008

IEICE Transactions on Electronics

122

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Digital superconductor electronics has been experiencing rapid maturation with the emergence of smaller-scale, lower-cost communications applications which became the major technology drivers. These applications are primarily in the area of wireless communications, radar, and surveillance as well as in imaging and sensor systems. In these areas, the fundamental advantages of superconductivity translate into system benefits through novel Digital-RF architectures with direct digitization of wide band, high frequency radio frequency (RF) signals. At the same time the availability of relatively small 4 K cryocoolers has lowered the foremost market barrier for cryogenically-cooled digital electronic systems. Recently, we have achieved a major breakthrough in the development, demonstration, and successful delivery of the cryocooled superconductor digital-RF receivers directly digitizing signals in a broad range from kilohertz to gigahertz. These essentially hybrid-technology systems combine a variety of superconductor and semiconductor technologies packaged with two-stage commercial cryocoolers: cryogenic Nb mixed-signal and digital circuits based on Rapid Single Flux Quantum (RSFQ) technology, room-temperature amplifiers, FPGA processing and control circuitry. The demonstrated cryocooled digital-RF systems are the world's first and fastest directly digitizing receivers operating with live satellite signals in X-band and performing signal acquisition in HF to L-band at ∼30 GHz clock frequencies.

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