SAW Grossary (TSF)
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SAW Grossary
What is SAW - Surface Acoustic Wave
- SAWs were first explained in 1885 by Lord Rayleigh, who
described the surface acoustic mode of propagation and
predicted its properties in his classic paper. Named after
their discoverer, Rayleigh waves have a longitudinal and a
vertical shear component that can couple with any media in
contact with the surface.This coupling strongly affects the
amplitude and velocity of the wave, allowing SAW sensors
to directly sense mass and mechanical properties.
What is IDT - Interdigital Transducer
Type of SAW Applications
- SONET - Synchronous Optical Network
- DECT - Digital European Cordless Telephone
- GSM - Global System for Mobile Communications
- VCO - Voltage Controlled Oscillator
- PCS - Personal Communication System
- IF - Intermediate Frequency Filter
- The theory developed by Blotekjaer ET AL.,
(1973) is used to study a periodic system of
conducting electrodes deposited upon the
surface of a piezoelastic half space - a SAW
IDT. It is assumed that some of the electrodes
are fed by external voltage sources. Exact
expressions are obtained for elements of
the transadmittance matrix, coupling currents
and electrode potentials. Numerical and
experimental results are presented.
- RF - Radio Frequency Filter
- 3G - Third Generation Systems
- PCN - Personal Communications Network
- PHS - Personal Handyphone System
- CDMA - Code Division Multiple Access
- SCDMA - Synchronous Code Division Multiple Access
- VOFDM - Vector Orthogonal Frequency Division
Multiplexing
Type of SAW devices
- TDMA - Time Division Multiple Access
- EGSM - Extended Global System for Mobile
- AMPS - Advanced Mobile Phone System
- GSM - Global System for Mobile Communications
- SDH - Synchronous Digital Hierarchy
- DCS - Digital Communications System
- PDC - Personal Digital Cellular
- IEF - Impedance Element Filter
- Precision - Bidirectional, High Loss
- TCRF - Transversely-Coupled Resonator filter
- LCRF - Longitudinally-Coupled Resonator Filter
- SFIT - Slanted Finger Interdigital Transducer
- SPUDT - Single Phase Unidirectional Transducer
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