Pulse compression using nonlinear interaction in a surface acoustic wave convolver

1971 ◽  
Vol 59 (4) ◽  
pp. 713-714 ◽  
Author(s):  
W.L. Bongianni
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Nonlinear Interaction ◽  
Pulse Compression

Improvements in surface-acoustic-wave pulse-compression filters

1973 ◽  
Vol 9 (7) ◽  
pp. 156 ◽  
Author(s):  
J.D. Maines ◽  
G.L. Moule ◽  
N.R. Ogg ◽  
G. Rich
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Pulse Compression ◽  
Wave Pulse

A HISTORY OF SURFACE ACOUSTIC WAVE DEVICES

2000 ◽  
Vol 10 (03) ◽  
pp. 553-602 ◽  
Author(s):  
David P. Morgan
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Mobile Phones ◽  
Spread Spectrum ◽  
Pulse Compression ◽  
New Technologies ◽  
Propagation Path ◽  
Saw Devices ◽  
Practical Reality ◽  
Professional Systems

This paper gives a historical account of the development of Rayleigh-wave, or surface-acoustic-wave (SAW), devices for applications in electronics. The subject was spurred on initially by the requirements of pulse compression radar, and became a practical reality with the planar interdigital transducer, dating from 1965. The accessibility of the propagation path gave rise to substantial versatility, and a huge variety of devices were developed. Passive SAW devices are now ubiquitous, with applications ranging from professional radar and communications systems to consumer areas such as TV, pagers and mobile phones. The paper describes the extensive work, particularly in the 1970s, to investigate SAW propagation in crystalline media, including piezoelectric coupling, diffraction and temperature effects. This led to identification of many suitable materials. Concurrently, many devices began development, including pulse compression filters, bandpass filters, resonators, oscillators, convolvers and matched filters for spread spectrum communications. In the 1970s, many of these became established in professional systems, and the SAW bandpass filter became a standard component for domestic TV. In the 1980s and 90s, SAW responded to the new call for low-loss filters, particularly for mobile phones. With losses as low as 2 dB required (and subsequently achieved) at RF frequencies around 900 MHz, a raft of new technologies was developed. Additionaly, for IF filters special techniques were evolved to reduce the physical size needed for narrow bandwidths. Such devices are now manufactured in very large quantities. In order to satisfy these needs, new types of surface wave, particularly transverse leaky waves, were investigated, and materials using such waves now have their place alongside more traditional materials.

STUDY OF DEFECTS IN a-Ge AND a-GeHxUSING SURFACE ACOUSTIC WAVE TECHNIQUE

1981 ◽  
Vol 42 (C4) ◽  
pp. C4-365-C4-368
Author(s):  
K. L. Bhatia ◽  
M.v. Haumeder ◽  
S. Hunklinger
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Wave Technique

Powder Transport by Surface Acoustic Wave Actuator using Bragg Reflection

2014 ◽  
Vol 134 (12) ◽  
pp. 1934-1935
Author(s):  
Tsunemasa Saiki ◽  
Yuya Matsui ◽  
Yasuto Arisue ◽  
Yuichi Utsumi ◽  
Akinobu Yamaguchi
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Bragg Reflection
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