ELEMENT FOR SPATIAL-FREQUENCY FILTRATION OF A SIGNAL BASED ON MAGNON CRYSTALS Russian patent published in 2020 - IPC H01P1/20 

FIELD: filters.

SUBSTANCE: invention relates to filters. Filter comprises a substrate from a nonmagnetic dielectric in the form of a meander formed by a set of periodic grooves, the longitudinal axis of which is perpendicular to the direction of propagation SMSW, layers of iron-yttrium garnet deposited on a substrate, microstrip converters for exciting and receiving SMSW, a source of a constant magnetic field. On the substrate, in one plane, two lines of periodic grooves of the same configuration with different width, coated with a layer of iron-yttrium garnet and separated along the length by a gap, in the middle part of each of the lines in the SMSW direction of propagation, a zone is formed, free from grooves the height of which coincides with the height of the groove projections, and the length satisfies the Fabry-Perot resonance condition for SMSW, wherein the microstrip converters for exciting and receiving SMSW are arranged on both sides of said zones, and the magnetic field of the magnetic field source is oriented perpendicular to the plane of the substrate.

EFFECT: possibility of frequency-frequency filtration of microwave signal, broader functional capabilities of modal composition control, as well as uniform and packet control of output ports and modes of operation of the device when changing frequency of the input signal.

4 cl, 8 dwg