Signal processing using surface acoustic waves

1985 ◽  
Vol 23 (4) ◽  
pp. 6-11 ◽  
Author(s):  
W. Shreve
Keyword(s):  
Signal Processing ◽  
Acoustic Waves ◽  
Surface Acoustic Waves

A Novel Faint Signal Processing Method for Sensitivity Improvement of Pump/Probe-Based LG/LD SAW Spectroscopy System

2011 ◽  
Vol 301-303 ◽  
pp. 188-194
Author(s):  
Mao Sen Bai ◽  
Xing Fu ◽  
Dante Dorantes ◽  
Bao Yin Jin ◽  
Xiao Tang Hu
Keyword(s):  
Signal Processing ◽  
Acoustic Waves ◽  
Dead Zone ◽  
Surface Acoustic Waves ◽  
Processing Method ◽  
Pump Probe ◽  
Phase Lock ◽  
Signal Processing Method ◽  
Working Principle ◽  
Spectroscopy System

A novel faint signal processing method based on phase-lock amplification principle is developed to enhance the sensitivity of pump/probe-based laser generated and laser detected surface acoustic waves (LG/LD SAW) spectroscopy system. This novel method involves a “dead zone” filter located before a common phase-lock amplification unit, which wipes off most of the noise stacked on SAW signal. This paper explored the working principle of this novel signal processing method based on the knowledge of the characteristics of the system noise and the signal. The experiment result shows that the detection system’s sensitivity has been dramatically improved by this new signal processing method.

Characterization of RF Sputtered ZnO Piezoelectric Films Using Transmission Electron Microscope

1975 ◽  
Vol 33 ◽  
pp. 86-87
Author(s):  
Kemining W. Yeh ◽  
Richard S. Muller ◽  
Wei-Kuo Wu ◽  
Jack Washburn
Keyword(s):  
Integrated Circuit ◽  
Acoustic Waves ◽  
New Technology ◽  
Surface Acoustic Waves ◽  
Electromechanical Properties ◽  
Leading Role ◽  
Saw Devices ◽  
Transmission Electron ◽  
High Degree

Considerable and continuing interest has been shown in the thin film transducer fabrication for surface acoustic waves (SAW) in the past few years. Due to the high degree of miniaturization, compatibility with silicon integrated circuit technology, simplicity and ease of design, this new technology has played an important role in the design of new devices for communications and signal processing. Among the commonly used piezoelectric thin films, ZnO generally yields superior electromechanical properties and is expected to play a leading role in the development of SAW devices.

Attenuation of surface acoustic waves by quantum dots

1998 ◽  
Vol 77 (5) ◽  
pp. 1195-1202
Author(s):  
Andreas Knabchen Yehoshua, B. Levinson, Ora
Keyword(s):  
Quantum Dots ◽  
Acoustic Waves ◽  
Surface Acoustic Waves
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