Monolithic composite resonator devices with intrinsic mode control

A composite resonator device comprising:

• a single piezoelectric element mounted to a base at two or more mount points;
• and
• two resonators on the single piezoelectric element and configured to provide different resonant responses, the different resonant responses being electrically combined to produce an output signal in which at least one desired response mode is enhanced, or at least one undesired response mode is suppressed, or both,
• wherein at least one of the two resonators uses a pixel-projection electrode, where the pixel-projection electrode includes a projection element located opposite a top and/or bottom face of the piezoelectric element, and the projection element projects electromagnetic waves in the form of pixels onto the piezoelectric element and receives electromagnetic waves back from the piezoelectric element, where the pixels are projected onto the piezoelectric element with optional phase and gain modulations and locations which are selected in order to compensate for temperature-induced frequency drift of the output signal,
• and wherein the two resonators are positioned in a mechanically antiparallel configuration on opposite sides of the mount points in order to offset a portion of an acceleration sensitivity vector of the piezoelectric element in the output signal.

A composite resonator device comprising:

• a ceramic base;
• a metal lid affixed to a top outer lip of the base forming a sealed package having an internal cavity;
• a single piezoelectric element in the internal cavity mounted to the base at two or more mount points;
• and
• two resonators on the single piezoelectric element and configured to provide different resonant responses, the different resonant responses being electrically combined to produce an output signal in which at least one desired response mode is enhanced, or at least one undesired response mode is suppressed, or both,
• wherein the two resonators have metal electrodes of equal area but unequal mass or equal mass but unequal area,
• and wherein the two resonators are positioned in a mechanically antiparallel configuration on opposite sides of the mount points in order to offset a portion of an acceleration sensitivity vector of the piezoelectric element in the output signal.