improve on the conventional piezoelectric resonator . Further, the apparatus and method for improving for filters with the piezoelectric resonator are provided. In one example, a piezoelectric resonator comprises a piezoelectric material disposed on the substrate, and the substrate. First and second electrodes are disposed on a piezoelectric material. Piezoelectric resonator has a pass band, the peripheral portion of the piezoelectric material is anchored to the substrate so as to suppress the in-band spurious modes of piezoelectric material. When the anchoring portion is frozen, at the resonance maximum, close-up - will exhibit a maximum, and / or excessive deflection displacement. The piezoelectric resonator may be integrated on a semiconductor die. Each of the plurality of filters having piezoelectric resonators having different pass bands can be disposed on the substrate.
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