Redefined element factor for simplified i.d.t. design

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Redefined element factor for simplified i.d.t. design

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© The Institution of Electrical Engineers
Published

It is shown that the response of interdigital transducers with uniform periodicity and duty factor can be written as the product of a redefined element factor and an array factor even if the magnitude and phase of the electrode voltages are completely arbitrary.

Inspec keywords: surface acoustic wave devices; ultrasonic transducers

Other keywords: array factor; SAW; interdigital transducers; surface acoustic wave; redefined factor

Subjects: Transduction; devices for the generation and reproduction of sound; Ultrasonics, quantum acoustics, and physical effects of sound; Acoustic wave devices

References

    1. 1)
      • Kerbel, S.J.: `Design of harmonic SAW oscillators without external filtering and new data on the temperature coefficient of quartz', Proceedings of the IEEE ultrasonics symposium, 1974, p. 276–281.
    2. 2)
      • K.R. Laker , E. Cohen , T.L. Szabo , J.A. Pustaver . Computer-aided design of withdrawal-weighted SAW bandpass filters. IEEE Trans. , 241 - 251
    3. 3)
      • W.R. Smith , W.F. Pedler . Fundamental- and harmonic-frequency circuit model analysis of interdigital transducers with arbitrary metallization ratios and polarity sequences. IEEE Trans. , 853 - 864
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