A Novel Lamé Mode RF-MEMS resonator with high quality factor

Abstract

Abstract This work presents a high-performance Lame mode resonator with high Q values. The anchor loss and thermoelastic damping (TED) were effectively decreased with the optimized tether design and etch hole distribution. A simple and reliable process was developed to batch fabricate the Lame mode resonators with nano-scale spacing gap. In air, a low bias voltage of 2.5\xa0V can excite a resonance peak height over 26\xa0dB for the resonator with high Q of 8900. In vacuum, the required bias voltage was further down to 1.5\xa0V, which is the lowest one among the reported Lame mode resonators. A boosted Q value of 128400 was obtained, corresponding to the highest f\xa0×\xa0Q product of 6.60\xa0×\xa01012 among the state-of-art perforated ones. Moreover, the nonlinearities were experimentally observed, which provides helpful guidance on the stable operation of the resonators. The proposed resonator could have potential in building up advanced wireless communication systems with low power consumption and high-level integration.