FREQUENCY FILTER OF UHF SIGNAL ON MAGNETIC WAVES Russian patent published in 2018 - IPC H01P1/20 

FIELD: radio engineering.

SUBSTANCE: invention relates to UHF electronics, in particular to instruments on magnetostatic waves, and can be used as a frequency filter. Essence of the invention lies in the fact that the frequency filter of the UHF signal on magnetostatic waves contains a magnetic element, which is a magnon crystal, having the form of an extended rectangle with pointed ends along the longitudinal axis and periodic geometric irregularities in the form of triangular elements, the period of triangular elements is chosen from the condition for the formation of the Bragg bandgap in the range of wave numbers from 100 cm^-1 up to 300 cm^-1, a piezoelectric element having a length less than the length of the magnetic element, solid-made outer electrode of the piezoelectric element, and the electrode adjacent to the surface of the magnetic element is in the form of an interdigital transducer with a period T selected from the condition T=2P, where P is the period of the triangular elements.

EFFECT: creation of a frequency filter of the UHF signal with control of the frequency range of the filter and the bandwidth, the reduction of the sizes to the micro-dimensional domain, and simplification of the design.

6 cl, 5 dwg