Design of SAW delay lines for sensors

Transversal filter and circuit models are used for a SAW delay-line transfer-function derivation. The design procedure of SAW sensor delay lines is described. Calculation and measurement results of a SAW delay line for a centre frequency of about 70 MHz on a 128∘ YX LiNbO 3 substrate are presented....

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Bibliographic Details
Published in:Sensors and actuators. A, Physical Physical, 1998-05, Vol.67 (1), p.60-64
Main Author: Soluch, Waldemar
Format: Article
Language:English
Subjects:
Acoustic wave devices, piezoelectric and piezoresistive devices
Acoustoelectric effects and surface acoustic waves (saw) in piezoelectrics
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Delay lines
Dielectric, ferroelectric, and piezoelectric devices
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Electronics
Exact sciences and technology
General equipment and techniques
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Physics
Piezoelectricity and electromechanical effects
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Sensors
Sensors (chemical, optical, electrical, movement, gas, etc.)
remote sensing
Surface acoustic waves
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Summary:Transversal filter and circuit models are used for a SAW delay-line transfer-function derivation. The design procedure of SAW sensor delay lines is described. Calculation and measurement results of a SAW delay line for a centre frequency of about 70 MHz on a 128∘ YX LiNbO 3 substrate are presented. Very good agreement is obtained between theoretical and experimental parameters of the delay line.
ISSN:0924-4247
1873-3069
DOI:10.1016/S0924-4247(97)01737-8