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Investigation of a classical millimeter-wave mixer using SIS lead junctions

A. V. Poladich, L. P. Strizhko

Журнал технической физикиAug 1, 19880 citations

SIS Junction MM Wave Receivers

Alexander N. Vystavkin, Michael A. Tarasov, V. P. Koshelets +10 more

The results of development and investigations of ultra-low-noise waveguide and quasioptical receivers of millimeter wave band region based on SIS mixers are presented. The possible cryogenic components of millimeter wave band receivers based on SIS junctions such as dc SQUID IF amplifiers, SIS noise sources, cooled ferrite phase-shifters-modulators, superconducting mm-wave local oscillators, superconducting analog-to-digital converters were designed, produced and experimentally studied. The prospects of creation the entirely superconducting integrated receiving circuits containing all mentioned above superconducting components are discussed.The results of development and investigations of ultra-low-noise waveguide and quasioptical receivers of millimeter wave band region based on SIS mixers are presented. The possible cryogenic components of millimeter wave band receivers based on SIS junctions such as dc SQUID IF amplifiers, SIS noise sources, cooled ferrite phase-shifters-modulators, superconducting mm-wave local oscillators, superconducting analog-to-digital converters were designed, produced and experimentally studied. The prospects of creation the entirely superconducting integrated receiving circuits containing all mentioned above superconducting components are discussed.

European Microwave Conference (EuMC)Oct 1, 19920 citations

Temperature-dependent performances of Nb SIS mixers at millimeter and submillimeter wavelength Microwave and Millimeter Wave Technology

Jie Liu, Wenlei Shan, Sheng-Cai Shi

The dependence of the performance of Superconductor-Insulator-Superconductor (SIS) mixers on the ambient temperature is investigated both theoretically and experimentally at millimeter and submillimeter wavelength. We found that the mixers' conversion gain plays a dominant role in the temperature-induced variation of the overall receiver sensitivity. To achieve a straightforward image of how the ambient temperature influences the conversion gain, we introduce a pure shape factor that allows for determining the mixers' conversion gain from the nonlinearity of their IV curves. We measured the performance of an SIS mixer at 100GHz band with the ambient temperature ranging from 3.8K to 8.5K to verify the validity of the quantum mixing theory. The experimental results are found in good agreement with the simulation results. This agreement indicates the validity of quantum mixing theory at a relatively high temperature up to the superconducting critical temperature. The measurement results show that at 100GHz band, the Nb SIS mixer can maintain a reasonable performance at the ambient temperature as high as 80% of the superconducting critical temperature. In addition to the gain and noise, the receiver stability in terms of Allen variance was also measured at various ambient temperatures without any apparent difference found.The dependence of the performance of Superconductor-Insulator-Superconductor (SIS) mixers on the ambient temperature is investigated both theoretically and experimentally at millimeter and submillimeter wavelength. We found that the mixers' conversion gain plays a dominant role in the temperature-induced variation of the overall receiver sensitivity. To achieve a straightforward image of how the ambient temperature influences the conversion gain, we introduce a pure shape factor that allows for determining the mixers' conversion gain from the nonlinearity of their IV curves. We measured the performance of an SIS mixer at 100GHz band with the ambient temperature ranging from 3.8K to 8.5K to verify the validity of the quantum mixing theory. The experimental results are found in good agreement with the simulation results. This agreement indicates the validity of quantum mixing theory at a relatively high temperature up to the superconducting critical temperature. The measurement results show that at 100GHz band, the Nb SIS mixer can maintain a reasonable performance at the ambient temperature as high as 80% of the superconducting critical temperature. In addition to the gain and noise, the receiver stability in terms of Allen variance was also measured at various ambient temperatures without any apparent difference found.

Jan 1, 20120 citations

Analysis of an Experimental High Performance 3-MILLIMETER SIS Mixer

Juha A. Mallat, Antti V. Räisänen

Jan 1, 19880 citations

Millimeter wave superconducting receivers

Qing Hu, C. A. Mears, P. L. Richards

Recent work done at Berkeley on the development of millimeter-wave heterodyne mixers using superconductor-insulator-superconductor (SIS) junctions is reviewed. Two types of mixers have been developed; a conventional waveguide system using a resonant cavity and an open-structure quasioptical system using planar antennas and lenses. Using the waveguide system, the lowest mixer noise level yet obtained (within 25% of the quantum limit) at 95 GHz has been achieved. The quasioptical system has achieved a good mixer performance up to 200 GHz, and it has shown promise for use at submillimeter wavelengths.>Recent work done at Berkeley on the development of millimeter-wave heterodyne mixers using superconductor-insulator-superconductor (SIS) junctions is reviewed. Two types of mixers have been developed; a conventional waveguide system using a resonant cavity and an open-structure quasioptical system using planar antennas and lenses. Using the waveguide system, the lowest mixer noise level yet obtained (within 25% of the quantum limit) at 95 GHz has been achieved. The quasioptical system has achieved a good mixer performance up to 200 GHz, and it has shown promise for use at submillimeter wavelengths.>

IEEE MTT-S International Microwave Symposium digestDec 9, 20020 citations

Superconducting receivers of millimeter waves

Alexander N. Vystavkin, V. P. Koshelets, G. A. Ovsiannikov

Radiotekhnika i ElektronikaDec 1, 19890 citations

An Investigation of Linearity Performance of Superconducting SIS Mixer on Millimeter-Wave Receiver

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