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TURKISH JOURNAL OF PHYSICS

Priority Trends in Superconducting Microwave Radioelectronics

Alexander G. Denisov

Published Jan 1, 1996• 0 citations
Publisher

Abstract

In this paper, status of superconducting microwave radioelectronics are generally described. Development of matrix receiving systems of radiovision for remote sensing, development of superconducting oscillators of millimeter ( MMW) and submillimeter (SMMW) wave bands, and development of Josephson effect-based devices for measurement and analysis of parameters of weak microwave signals for various new application are presented.

DOI
10.55730/1300-0101.2582

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In this paper, status of superconducting microwave radioelectronics are generally described. Development of matrix receiving systems of radiovision for remote sensing, development of superconducting oscillators of millimeter ( MMW) and submillimeter (SMMW) wave bands, and development of Josephson effect-based devices for measurement and analysis of parameters of weak microwave signals for various new application are presented.
Josephson junctions are highly nonlinear and respond up to infrared frequencies. A wide variety of high frequency applications have been explored. In addition, several high frequency superconducting devices are being developed which do not use the Josephson effect. These include a superconducting version of the Schottky barrier diode for use as a heterodyne mixer and a video detector, and also a composite superconducting bolometer. In this review, the state of development of superconducting mixers, detectors, and parametric amplifiers at microwave, millimeter, and submillimeter wavelengths is discussed. Emphasis will be placed on developments which have taken place since 1974 when a previous review was circulated.
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A weak link between two bulk superconductors can exhibit Josephson effects and can be used as a fast sensitive detector or mixer for electromagnetic radiation. Emphasis is placed on the millimeter and submillimeter range where such applications are potentially most important, though such devices should also work well at lower frequencies. The peculiar properties of the weak link make possible a variety of modes of operation including one in which it is both local oscillator and mixer. These modes of operation are analyzed and the pivotal experiments are reviewed. Noise and impedance matching are considered and comparison is made with other types of detectors of millimeter and submillimeter waves.
CSIRO is the Australian national science agency and has had a long-history in research and development of superconducting electronic devices and systems for various practical applications. In this paper, I will give a brief introduction about the Josephson junction technology and describe CSIRO’s research progress in developing various novel high-Tcsuperconducting (HTS) Josephson junction devices and their applied systems. Recently, CSIRO has led the frontier research and development of high-frequency HTS Josephson detectors and heterodyne mixers ranging from microwave, millimeter, to terahertz (THz) frequency bands. These high-frequency superconducting quantum sensors/devices have demonstrated superior performance and applied in sensing and communication systems.
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