Superconductor bandpass filter having parameters changed by a variable magnetic penetration depth

摘要

The superconductor bandpass filter for electromagnetic signals includes a substrate (5); striplines (1) made of a type II superconductive material arranged on the substrate and a tuning device (2) for tuning the superconductor bandpass filter consisting of a device for changing a magnetic penetration depth (T) of the striplines (1), so as to change the effective length, effective width and effective spacing of the striplines and thus to change the center frequency and/or the bandwidth. The device for changing the magnetic penetration depth . lambda.(T) of the striplines (1) advantageously includes a device for exerting a mechanical force or stress on the striplines and/or a device for varying a magnetic field applied to the striplines.