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2011•Unpublished venueRequires access

SURFACE ACOUSTIC WAVE DEVICES AS PASSIVE, WIRELESS TRANSDUCERS FOR MECHANICAL TESTS

Margarida M. Fernandes, Joana Catarina Mendes, D. Santos, Polo de Aveiro

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Abstract

Surface acoustic wave (SAW) sensing devices have been around for some time. They exhibit the double advantage of being wireless and passive, i.e., they can be remotely interrogated by means of a radio frequency beam and they require no local source of energy. Surface acoustic waves, or Rayleigh waves, can be induced on a piezoelectric substrate by means of a device called an interdigital transducer or IDT [1], as shown on Fig. 1.

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What this paper is about

Surface acoustic wave (SAW) sensing devices have been around for some time. They exhibit the double advantage of being wireless and passive, i.e., they can be remotely interrogated by means of a radio frequency beam and they require no local source of energy. Surface acoustic waves, or Rayleigh waves, can be induced on a piezoelectric substrate by means of a device called an interdigital transducer or IDT [1], as shown on Fig. 1.

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Available abstract

Surface acoustic wave (SAW) sensing devices have been around for some time. They exhibit the double advantage of being wireless and passive, i.e., they can be remotely interrogated by means of a radio frequency beam and they require no local source of energy. Surface acoustic waves, or Rayleigh waves, can be induced on a piezoelectric substrate by means of a device called an interdigital transducer or IDT [1], as shown on Fig. 1.

Key concepts: Surface acoustic wave, Acoustics, Rayleigh wave, Transducer, Interdigital transducer, Surface acoustic wave sensor, Acoustic wave, Surface wave

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