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Related Experiment Videos

General Green's functions for SAW device analysis.

D Qiao1, W Liu, P M Smith

  • 1Dept. of Electr. and Comput. Eng., McMaster Univ., Hamilton, Ont.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|February 5, 2008
PubMed
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A generalized Green's function accounts for mechanical loading effects ignored by traditional methods in surface acoustic wave (SAW) device analysis. This new approach enhances accuracy for SAW device modeling.

Area of Science:

  • Physics
  • Electrical Engineering
  • Materials Science

Background:

  • Traditional Green's function methods are standard for analyzing surface acoustic wave (SAW) devices.
  • These methods simplify derivations, neglecting crucial effects like mass loading from surface electrodes.
  • A generalized Green's function has been developed to incorporate mechanical loading effects.

Purpose of the Study:

  • To deduce generalized Green's functions using matrix notation.
  • To describe the impact of surface stresses and electrical displacement on mechanical and electrical properties.
  • To present effective permittivities and Green's functions for specific materials.

Main Methods:

  • Utilizing concise matrix notation based on prior work by Adler (1994) and Peach (1995).

Related Experiment Videos

  • Deriving generalized Green's functions to model surface acoustic wave propagation.
  • Calculating effective permittivities and Green's functions.

    • Main Results:

    • The generalized Green's function successfully incorporates mechanical loading effects.
    • Effective permittivities for 15 different material cuts are calculated.
    • 16-element Green's functions for two specific materials are presented.

    Conclusions:

    • The generalized Green's function offers a more comprehensive model for SAW devices.
    • This approach improves the analysis of SAW devices by including previously ignored physical phenomena.
    • The presented data provides valuable parameters for the design and analysis of SAW devices.