Technique for triple-transit suppression in surface-acoustic-wave delay lines

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Technique for triple-transit suppression in surface-acoustic-wave delay lines

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A unique broadband technique for suppression of the triple-transit signal in a surface-acoustic-wave delay line is described. The scheme, which utilises two similar delay line channels differing only in the symmetry of the output transducers, suppresses triple-transit signals by a mechanism which is independent of frequency and may be used on low-as well as high-coupling substrates.

Inspec keywords: surface acoustic wave devices; filters; ultrasonic transducers; ultrasonic delay lines

Other keywords: frequency independent suppression; transducer symmetry; SAW delay lines; triple transit suppression; broadband technique; dual delay line scheme; low coupling substrates

Subjects: Acoustic signal processing; Acoustic wave devices; Acoustical measurements and instrumentation; Sonic and ultrasonic transducers and sensors; Passive filters and other passive networks

References

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      • M.F. Lewis . Triple-transit suppression in surface-acoustic-wave devices. Electron. Lett. , 553 - 554
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      • W.R. Smith , H.M. Gerard , J.H. Collins , T.M. Reeder , H.J. Shaw . Analysis of interdigital surface wave transducers by use of an equivalent circuit model. IEEE Trans. , 856 - 865
    4. 4)
      • F.G. Marshall . New technique for the suppression of triple-transit signals in surface-acoustic-wave delay lines. Electron. Lett. , 311 - 312
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      • W.R. Smith , H.M. Gerard , J.H. Collins , T.M Reeder , H.J. Shaw . Analysis of surface wave delay lines with interdigital transducers. IEEE Trans. , 673 - 685
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      • M.T. Wauk . Suppression of spurious triple-transit signals in acoustic surface-wave delay lines. Appl. Phys. Lett. , 481 - 483
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Erratum: Technique for triple-transit suppression in surface-acoustic-wave delay lines