A low-noise SIS receiver measured from 480 GHz to 650 GHz using Nb junctions with integrated RF tuning circuits

Febvre, Pascal; McGrath, W. R.; Batelaan, P. D.; Bumble, B.; Leduc, H. G.; George, Sébastien; Feautrier, P.

doi:10.1007/bf02096128

Cited by 20 publications

(14 citation statements)

References 19 publications

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“…6 of Ref. [5] for instance). Though heterodyne receivers have considerably evolved during the last decade in terms of sensitivity, bandwidth and available frequency range, the general setup basically remains the same: the input microwave signal is fed in the cryogenic mixer though quasi-optical means.…”

Section: Geometrymentioning

confidence: 94%

Antennas for Short Distance Communications in Cryogenic Environment

Bouis

Febvre

2008

Int J Infrared Milli Waves

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Sets of bow-tie antennas, used in a single emitter-receiver near-field configuration and in array configuration, have been studied to be used as wireless means to transmit 8-12 GHz microwave signals from the cold stage of a cryogenic system to a roomtemperature processing unit. Indeed, the absence of heat conduction allows increasing the performance of cryogenic systems and open the way to multichannel microwave systems that are necessary for imagers. Transmission loss has been found to be lower than 3 dB over a 1.5 GHz bandwidth while crosstalk in the array configuration is kept below −20 dB when antennas are located at around 90 mm transversally from each other.

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Section: Geometrymentioning

confidence: 94%

Antennas for Short Distance Communications in Cryogenic Environment

Bouis

Febvre

2008

Int J Infrared Milli Waves

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“…THE RADIAL STUB Some simple expressions of the impedance at the input of a lossless, radial stub using normal etl conductors have been given by Ramo et ald [1] and used by Vinding [11], Syrett [12] and Atwater - [13]. Accuratp but more complicated expressions have been given by Giannini et al [141 and show very good agreement with experiments.…”

Section: The Supercondnucting Microstrip Linementioning

confidence: 94%

“…A submillimeter wave SIS heterodyne receiver for 547 GHz based on a waveguide mixer has been designed, its performance has been reported elsewhere by Febvre et al [1].…”

Section: Mrrdcrionmentioning

confidence: 98%

“…Eo (1) where co is the angular frequency of operation, £ is the permittivity of the dielectric and a is the conductivity of the electrode. Also the fields are assumed to be uniform in the dielectric if:…”

Section: The Supercondnucting Microstrip Linementioning

confidence: 99%

“…It uses effective dimensions to account for t fringing fields which are used along with the formulas given in Ref. [10], [1 ] and [12] Using the fonralism of Ref. [10] tnd [15], the impedance at the input of the radial stub, which is the ,connection plane between the radial stub and the microstrip line, is:…”

Section: The Supercondnucting Microstrip Linementioning

confidence: 99%

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Superconducting RF tuning circuits for low-noise submillimeter wave SIS receivers

Febvre

McGrath

Bumble

et al. 1994

24th European Microwave Conference, 1994

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Heterodyne receivers using SIS (Superconductor-Insulator-Superconductor) junctions are the most sensitive receivers for radioastronomy in the millimeter wave and submillimeter wave frequency range. These instruments use superconducting RF tuning circuits to resonate out the high shunt capacitance of the SIS junction in order to provide a good impedance match with the microwave envionment at the frequency of operation. An accurate model to detennine the electrical propeties of impedance matching circuits has been developed. An analysis of superconducting microstrip lines and radial stubs taking into account the fringing fields of the thick electrode, the step discontinuities, and the Mattis-Bardeen complex conductivity for the superconductor surface impedance is presented. This model is used to calculate the resonance frequencies of the matching circuit with the capacitively-'shunted SIS junction. Good agreement is found between calculated and experimentally measured resonance frequencies at 550-600 GHz. MRRDCrIONThe most -sensitive heterodyne receivers used for millimeter wave and submillimeter wave radioastronomy employ superconductor-insulator-superconductor (SIS) tunnel junctions as the nonlinear mixing element. A submillimeter wave SIS heterodyne receiver for 547 GHz based on a waveguide mixer has been designed, its performance has been reported elsewhere by Febvre et al [1].It uses high current density submicron Nb-AlO-Nb tunnel junctions. The large intrinsic capacitance of the junction which shunts the signal away from the nonlinear conductance at high fiequencies must be properly tuned for optimum performance. This is accomplished through the use of integrated superconducting Nb matching circuits to match the complex impedance of the junction to the available tuning range of the waveguide mixer mount. Microstrip technology has been chosen for the RF tuning circuits for its compatibility with the SIS junction fabrication process. Two different types of integrated RF circuits, a series transformer and a parallel inductance, have been designed. An example of each type of circuit designed for 547 GHz is shown in figure 1 and figure 2. Nb Ba Eectrode Nb B Elayo Nb Counts Eletrode S (b) (b) o nN JnJiuon R0 Ntub -Nb W69<)6u&u&29=XX&Xa Nb F 1: SlS am junefon wih an hd miastip fr c i egur 2:51$ tunnel junction with an integrated puarale mcostn tuning drcuht. (a) Top view showing Waeison Nu blmerar. aTop view showing transmission in. dimenios. (b) Cease seaSon view shoin ?m topology.b Cross secton view showing film topology. 1430

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Superconducting Quantum Electronics

Razmkhah

Febvre

2023

Beyond‐CMOS

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A low-noise SIS receiver measured from 480 GHz to 650 GHz using Nb junctions with integrated RF tuning circuits

Cited by 20 publications

References 19 publications

Antennas for Short Distance Communications in Cryogenic Environment

Antennas for Short Distance Communications in Cryogenic Environment

Superconducting RF tuning circuits for low-noise submillimeter wave SIS receivers

Superconducting Quantum Electronics

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