State of the art in wireless sensing with surface acoustic waves

2001 ◽  
Vol 48 (2) ◽  
pp. 265-271 ◽  
Author(s):  
W.-E. Bulst ◽  
G. Fischerauer ◽  
L. Reindl
Keyword(s):  
Acoustic Waves ◽  
State Of The Art ◽  
Surface Acoustic Waves ◽  
Wireless Sensing

scholarly journals Giant nonreciprocity of surface acoustic waves enabled by the magnetoelastic interaction

2020 ◽  
Vol 6 (49) ◽  
pp. eabc5648
Author(s):  
Piyush J. Shah ◽  
Derek A. Bas ◽  
Ivan Lisenkov ◽  
Alexei Matyushov ◽  
Nian X. Sun ◽  
...  
Keyword(s):  
Acoustic Waves ◽  
State Of The Art ◽  
Surface Acoustic Waves ◽  
Power Reduction ◽  
Wave System ◽  
Physical Systems ◽  
Current State ◽  
Saw Devices ◽  
Communications Technologies ◽  
Microwave Communications

Nonreciprocity, the defining characteristic of isolators, circulators, and a wealth of other applications in radio/microwave communications technologies, is generally difficult to achieve as most physical systems incorporate symmetries that prevent the effect. In particular, acoustic waves are an important medium for information transport, but they are inherently symmetric in time. In this work, we report giant nonreciprocity in the transmission of surface acoustic waves (SAWs) on lithium niobate substrate coated with ferromagnet/insulator/ferromagnet (FeGaB/Al2O3/FeGaB) multilayer structure. We exploit this structure with a unique asymmetric band diagram and expand on magnetoelastic coupling theory to show how the magnetic bands couple with acoustic waves only in a single direction. We measure 48.4-dB (power ratio of 1:69,200) isolation that outperforms current state-of-the-art microwave isolator devices in a previously unidentified acoustic wave system that facilitates unprecedented size, weight, and power reduction. In addition, these results offer a promising platform to study nonreciprocal SAW devices.

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

Brillouin light scattering from surface acoustic waves in photonic microwires

2014 ◽  
Author(s):  
Jean-Charles Beugnot ◽  
Sylvie Lebrun ◽  
Gilles Pauliat ◽  
Vincent Laude ◽  
Thibaut Sylvestre
Keyword(s):  
Light Scattering ◽  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Brillouin Light Scattering

Surface acoustic waves (SAW) interaction with 2DES at spin-splitted Landau levels

2000 ◽  
Vol 284-288 ◽  
pp. 1732-1733
Author(s):  
Irina L Drichko ◽  
Andrey M Diakonov ◽  
Valery V Preobrazenskii ◽  
Ivan Yu Smirnov ◽  
Alexandr I Toropov
Keyword(s):  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Landau Levels
Sign in / Sign up

Export Citation Format

Share Document