| 摘要 |
FIELD: physics; radio. ^ SUBSTANCE: invention relates to high frequency equipment, particularly to devices for switching signals in the centimetre, millimetre and sub-millimetre ranges. The high-speed superconducting switch has a thin-film switching element with submicrometre dimensions on an insulating substrate and conducting electrodes. The superconducting switching element is connected across a microwave transmission line and is made in form of a superconductor nanobridge with on impedance much greater than on impedance of the line and small impedance much less than off impedance of the line and conducting electrodes are connected to the microwave transmission line transversely. ^ EFFECT: increase in operating frequency of the modulator signal to gigahertz, over 90% increase of modulation depth, reduction of real losses to less than 1 dB, increase in modulation frequency (switching) to hundreds of megahertz. ^ 6 cl, 4 dwg |
