Solidly Mounted Bi-dimensional Mode Resonators

A process of designing a surface acoustic wave resonator device comprising:

• a substrate;
• a layer of piezoelectric material solidly mounted on a surface of the substrate, wherein the layer of piezoelectric material is not suspended over a cavity in the substrate;
• a pair of interdigitated electrodes disposed on the layer of piezoelectric material at a surface opposite the substrate;
• and
• one or more ports electrically connected to the pair of electrodes;
• wherein said process comprises boosting a bi-dimensional mode of vibration in the layer of piezoelectric material of the device by adjusting or selecting one or more of the following:
• (i) a separation distance between components of a pair of interdigital electrodes;
• (ii) any of a height of the piezoelectric material layer, a thickness of the substrate layer, a thickness of the pair of interdigital electrodes, or a ratio between any two of the foregoing;
• (iii) a doping level of a piezoelectric material;
• (iv) presence, absence, position, structure, or composition of a Bragg reflector and/or of a second Bragg reflector;
• or
• (v) presence or absence of a bottom electrode.