FREQUENCY-SELECTIVE DEVICE FOR PROCESSING SURFACE ACOUSTIC WAVE SIGNALS Russian patent published in 2014 - IPC H03H9/00 

FIELD: radio engineering, communication.

SUBSTANCE: frequency-selective device for processing surface acoustic wave signals includes a layered acoustic line made of a phononic crystal in form of an elongated plate, on one wide face of which there is a layer of solid substance with acoustic impedance, different from the material of the acoustic line, and at least two electroacoustic transducers connected to the acoustic line; the phononic crystal plate is formed by an array of separate extended elements arranged in a matrix, wherein the longitudinal axis of said elements matches the width of the plate; the layer of solid substance completely covers the surface of the plate, wherein the input electroacoustic transducer is capable of exciting Love surface acoustic waves in the layer of the solid substance and is placed on the wide face at one end of the plate; the layer of solid substance in the direction of the length of the plate has an area with a variable thickness; receiving electroacoustic transducers are placed at the other wide face of the plate.

EFFECT: high resolution of the frequency-selective device for processing surface acoustic wave signals during concurrent processing of signals at different frequencies.

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