DEVICES ON SAW WITH CONTROLLED CHARACTERISTICS
Journal Title: Сенсорна електроніка і мікросистемні технології - Year 2019, Vol 16, Issue 2
Abstract
The article is devoted to the important section of acoustoelectronics - devices on the surface acoustic waves (SAW) with controlled characteristics. The article contains a significant overview part, analysis of the existing methods for characteristic managing, as well as a description of the proposed developed new method, which is based on the angular dependence of the phase velocity of SAW propagation in single crystal piezoelectrics. Examples of practical implementation of the method in specific devices are given, the achieved and possible areas of application are indicated. A new, original approach to the creation of high-performance acousto-electronic devices on SAW with controlled basic characteristics is considered in detail - the use of anisotropic properties of piezoelectric single crystals. In particular, angular dependencies of phase velocity of SAW propagation. This effect, as well as SAW contactless generation and detection, allowed to change the characteristics of devices on SAW, for example, filters with adjustable frequency 5-6 times more than the analogues and create sensors of different functional purposes. It is shown in this way that active acoustoelectronics not only can significantly improve the achieved device parameters, but also increase the number of functions performed by devices, to ensure their complexity and functional flexibility, thereby expanding the capabilities of acoustoelectronics as a whole.
Authors and Affiliations
Ya. I. Lepikh
Keywords
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- EP ID EP670179
- DOI 10.18524/1815-7459.2019.2.171238
- Views 65
- Downloads 0
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