HIGH-FREQUENCY FILTER AT CUT CRYSTAL RESONATOR Russian patent published in 2009 - IPC H03H9/13 

FIELD: physics; radio.

SUBSTANCE: invention relates to piezo engineering and can be used for making quartz links in high-pass filters. The high-frequency filter AT cut crystal resonator includes a crystal element made in form of a reversed mesa structure with deposition on its surface of crossed electrodes, conductors and terminal pads in attachment points in an NS-45 frame, where size of projection of electrodes beyond the junction d is determined by the radio d/h≥30, where h is thickness of the region of the crystal element, and the ratio of the size of the junction region of the electrodes along the crystal element X to the size along direction Z' equals 1.25. The junction region of the electrodes is rhombus shaped, the longer diagonal of which coincides with the direction of the axis X, the shorter diagonal coincides with direction of the axis Z', and the projecting ends of the electrodes are turned towards the positive direction of the axis X. Electrodes, conductor and terminal pads lie in the same plane on each side of the crystal element.

EFFECT: high quality and increased output of non-defective items.

5 dwg, 2 tbl