Simple technique for the accurate determination of delay-time variations in acoustic-surface-wave structures

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Simple technique for the accurate determination of delay-time variations in acoustic-surface-wave structures

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© The Institution of Electrical Engineers
Published

A method of determining small variations in delay time of acoustic surface waves is described which is both simple and accurate. As an example, the technique is applied to determining the temperature vanation of delay time of surface waves propagating in the z direction on a y face of lithium niobate.

Inspec keywords: surface phenomena; delay lines; time measurement

Subjects: Acoustic wave devices; Piezoelectric and ferroelectric devices; Time measurement

References

    1. 1)
      • H.E. Kallman . Transversal filters. Proc. Inst. Radio Engrs.
    2. 2)
      • W.R. Smith . Design of surface wave delay lines with interdigital transducers. IEEE Trans.
    3. 3)
      • E. Bernal , G.D. Chen , T.C. Lee . Low frequency electro-optic and dielectric constants of lithium niobate. Phys. Lett.
    4. 4)
      • R.H. Tancrell , M.B. Schulz , H.H. Barrett , L. Davis , M.G. Holland . Dispersive delay lines using ultrasonic surface waves. Proc. Inst. Elect. Electron. Engrs.
    5. 5)
      • A. Fukomoto , A. Watanabe . Temperature dependence of resonant frequencies of LiNbO3 plate resonators. Proc. Inst. Elect. Electron. Engrs.
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