Title :
Rayleigh-wave delay line using two grating-array transducers at 2.55 GHz
Author :
Hartemann, P. ; Arnodo, C.
Author_Institution :
Thomson-CSF, LCR Laboratoires d´´Acoustoélectricité & de Technologie Générale, Orsay, France
Abstract :
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.
Keywords :
acoustic microwave devices; piezoelectric transducers; ultrasonic delay lines; 2.55 GHz; LiNbO3 substrate; Rayleigh wave; acoustic surface waves; delay line; grating array transducers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19720196
