Impedance-matched high-overtone bulk acoustic resonator

High-Overtone Bulk Acoustic Resonator

Bulk Acoustic Wave High Overtone Resonator

the acoustic waves propagation losses in solid solutions of Rare Earth in Ittrium Aluminium Garnets. Matrix were Y^^^AlcO..« found few times lower than that of YAG matrix. The high overtone bulk acoustic wave resonators made of Y-, Lu Alr01o were studies. The Q c .5—X X 2 I £. factor 1.5 2.0*10 at 3.5 4.0 GHz was experimentally found. 1 INTRODUCTION The practical interest to the investigation o...

Resonance Spectrum Characteristics of Effective Electromechanical Coupling Coefficient of High-Overtone Bulk Acoustic Resonator

A high-overtone bulk acoustic resonator (HBAR) consisting of a piezoelectric film with two electrodes on a substrate exhibits a high quality factor (Q) and multi-mode resonance spectrum. By analyzing the influences of each layer’s material and structure (thickness) parameters on the effective electromechanical coupling coefficient (Keff), the resonance spectrum characteristics of Keff have been...

High-overtone Bulk Acoustic Resonator as passive Ground Penetrating RADAR cooperative targets

cooperative targets J.-M Friedt, A. Saintenoy, S. Chrétien, T. Baron, É. Lebrasseur, T. Laroche, S. Ballandras, a) and M. Griselin SENSeOR SAS, Besançon, France IDES, UMR CNRS 8148, Université Paris Sud, France Laboratoire de mathématiques, UMR CNRS 6623, Université de Franche Comté, Besançon, France FEMTO-ST Time & Frequency, UMR CNRS 6174, Université de Franche-Comté, Besançon, France ThéMA, ...

Bulk acoustic resonator based on piezoelectric ZnO belts.

In this paper, a bulk acoustic resonator based on ZnO belts is demonstrated. This device shows a great deal of promise in applications as an electronic filter and as a mass sensor. The fabricated device was characterized using vector network analysis, and both the first and third harmonics of resonance were observed at approximately 247 and 754 MHz, respectively. A one-dimensional Krimholt-Leed...