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The AlN based solidly mounted resonators consisted of the all-metal conductive acoustic Bragg reflectors by Da Chen; Yan Xu; Jingjing Wang; Luyin Zhang; Xueshui Wang; Min Liang is a Engineering article available to read on EtoBox.

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The solidly mounted resonators The all-metal Bragg reflectors AlN films Q factor a b s t r a c t The AlN based solidly mounted resonators utilizing the all-metal conductive Bragg reflectors have been demonstrated. The devices with different reflectors of Mo/Ti, W/Ti and AlN/Mo pairs have been fabricated and the frequency responses have been compared. The bottom electrode is incorporated into the conductive Bragg reflector, thereby reducing the parasitic resistance and the damping of the acoustic energy. The experimental results reveal that Mo/Ti and W/Ti reflectors exhibit excellent properties of frequency selection and clamping the acoustic wave. The devices show the distinct resonant phenomenon near 2.4 GHz with the excellent suppression of the shear mode and the sidelobe mode. Compared to the conventional device consisted of AlN/Mo reflector, the devices consisted of the conductive reflectors demonstrate the higher resonance frequency and obviously improved performance.

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Author

Da Chen; Yan Xu; Jingjing Wang; Luyin Zhang; Xueshui Wang; Min Liang

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0042-207X)

Published

2010

Language

EN

Field

Engineering (Physical Sciences)