New phase-shifting technique for group-type unidirectional transducers used in surface-acoustic-wave filters

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New phase-shifting technique for group-type unidirectional transducers used in surface-acoustic-wave filters

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© The Institution of Electrical Engineers
Published

The letter reports a novel method of phase shifting useful in the group type of unidirectional transducers used for the design of low-loss SAW filters. This technique utilises the thin-film capacitance present between the newly described configuration of the feed-electrode layers as an essential element of the required phase shifter. The stray capacitance existing between the feed electrodes is used to advantage. The theoretical and experimental results of one of the filters fabricated are presented.

Inspec keywords: piezoelectric transducers; surface acoustic wave devices; passive filters; phase shifters; ultrasonic transducers

Other keywords: phase-shifting technique; group-type unidirectional transducers; experimental results; SAW filters; surface-acoustic-wave filters; thin-film capacitance; feed-electrode layers; stray capacitance utilisation

Subjects: Passive filters and other passive networks; Other analogue circuits; Acoustic wave devices

References

    1. 1)
      • R.S. Krimholtz , G.L. Mtthaei , B.E. Hoiem . Acoustic surface wave hybrid-junction transducers. IEEE Trans. , 23 - 32
    2. 2)
      • K. Yamanouchi , F. Nyffeler , K. Shibayama . Low insertion loss acoustic surface wave filters using group-type unidirectional interdigital transducer. J. Acoust. Soc. Jpn. , 532 - 539
    3. 3)
      • Yamanouchi, K., Nyffeler, F., Shibayama, K.: `Low insertion loss elastic surface wave filter using group-type unidirectional interdigital transducer', IEEE Ultrasonics Symposium proceedings, September 1975, p. 317–321.
    4. 4)
      • Yamanouchi, K., Meguro, T., Gautam, J.K.: `Low-loss GHz range SAW filters using group-type unidirectional transducers new GUDT and new phase shifter', IEEE Ultrasonics Symposium, October 1982, San Diego, USA, p. 27–29.
    5. 5)
      • C.S. Hartmann , W.S Jones , H. Vollers . Wideband unidirectional interdigital surface wave transducers. IEEE Trans. , 378 - 381
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