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Rayleigh-wave delay line using two grating-array transducers at 2.55 GHz

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2 Author(s)
Hartemann, P. ; Thomson-CSF, LCR Laboratoires d''Acoustoélectricité & de Technologie Générale, Orsay, France ; Arnodo, C.

Grating-array transducers are used to launch acoustic surface waves at 2.55 GHz on a LiNbO3 substrate. The insertion loss of a 1.5 ¿s delay line is equal to 39 dB with matching stubs at input and output. The 3 dB bandwidth is equal to 87 MHz. For this frequency range, array transducers are easier to fabricate than standard interdigital transducers. Performances of the two types of transducers are compared.

Published in:

Electronics Letters  (Volume:8 ,  Issue: 10 )