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  4. Non-reciprocal acoustic devices based on linear or angular momentum biasing
 
patent

Non-reciprocal acoustic devices based on linear or angular momentum biasing

Alu, Andrea
•
Fleury, Romain  
•
Sounas, Dimitrios
2016

A non-reciprocal acoustic device that accomplishes non-reciprocity via linear or angular-momentum bias. The non-reciprocal acoustic device includes an azimuthally symmetric or planar acoustical cavity (e.g., ring cavity), where the cavity is biased by imposing a circular or linear motion of a gas, a fluid or a solid medium filling the cavity. Acoustic waveguides are connected to the cavity or the cavity is excited from the surrounding medium. A port of this device is excited with an acoustic wave. When the cavity is biased appropriately, the acoustic wave is transmitted to one of the other acoustic waveguides while no transmission of the acoustic wave occurs at the other acoustic waveguides. As a result, linear non-reciprocity is now realized in acoustics without distorting the input signal or requiring high input power or bulky devices.

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Type
patent
EPO Family ID

52003035

Author(s)
Alu, Andrea
•
Fleury, Romain  
•
Sounas, Dimitrios
Note

Alternative title(s) : (de) Nichtreziproke akustische vorrichtungen auf der basis von linearer oder drehimpulsvorspannung (fr) Dispositifs acoustiques non réciproques fondés sur une sollicitation à quantité de mouvement linéaire ou angulaire

EPFL units
LWE  
DOICountry codeKind codeDate issued

US9536512

US

B2

2017-01-03

JP2016531320

JP

A

2016-10-06

US2016203810

US

A1

2016-07-14

EP3036735

EP

A1

2016-06-29

CN105659315

CN

A

2016-06-08

KR20160047503

KR

A

2016-05-02

AU2014309342

AU

A1

2016-03-17

WO2015026509

WO

A1

2015-02-26

Available on Infoscience
March 6, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/135014
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