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Combined triple-transit and bulk-wave suppression in s.a.w. delay line

Combined triple-transit and bulk-wave suppression in s.a.w. delay line

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The use of 3 dB hybrid power dividers/combiners at the input and output of a pair of surface-acoustic-wave delay lines can give combined suppression of triple-transit signals and bulk-wave responses. Typically, the triple-transit signal is reduced by 20 dB and the bulk-wave responses by 15 dB compared with an unmodified delay line.

References

    1. 1)
      • F.G. Marshall . New techniques for the suppression of triple-transit signals in surface-acoustic-wave delay lines. Electron. Lett. , 311 - 312
    2. 2)
      • M.F. Lewis . Triple-transit suppression in surface-acoustic-wave devices. Electron. Lett. , 553 - 554
    3. 3)
      • M. Tsukamoto . TTE suppressed surface acoustic wave filter. Appl. Phys. Lett. , 559 - 560
    4. 4)
      • W.J. Tanski , H. van de Vaart . Technique for triple-transit suppression in surface-acoustic-wave delay lines. Electron. Lett. , 312 - 313
    5. 5)
      • R. la Rosa , C.F. Vasile . Broadband bulk-wave cancellation in acoustic-surface-wave devices. Electron. Lett. , 478 - 479
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