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    • 6. 发明授权
    • Method of frequency trimming surface acoustic wave devices
    • 频率调整表面声波装置的方法
    • US4435441A
    • 1984-03-06
    • US454806
    • 1982-12-30
    • Elio MarianiArthur Ballato
    • Elio MarianiArthur Ballato
    • H03H3/10B05D3/06
    • H03H3/10
    • The adjustment of the resonant frequency of a surface acoustical wave (SAW)evice is achieved utilizing the elastic deformation which occurs in a polymer when the polymer is energized. A film or patch of a polymer coating is applied to the substrate of the SAW device before sealing. The device is then subjected to an elevated temperature, to precure the polymer, and sealed. After being sealed with an appropriate transparent material, the device is subjected to a polymer-energizing media such as a light beam, high temperature or an electron beam. The applied polymer patch is energized resulting in elastic deformation of the patch. The polymer deformation results in a change in the elastic stiffness of the piezoelectric medium and thereby a change in the resonant frequency of the device.
    • 利用在聚合物通电时在聚合物中发生的弹性变形来实现表面声波(SAW)器件的谐振频率的调节。 在密封前将聚合物涂层的膜或贴片施加到SAW器件的衬底上。 然后将该装置进行升高的温度,以预固化聚合物并密封。 在用适当的透明材料密封之后,对该装置进行聚合物激励介质,例如光束,高温或电子束。 施加的聚合物贴片被通电,导致贴片的弹性变形。 聚合物变形导致压电介质的弹性刚度的变化,从而导致器件的谐振频率的变化。