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1. (WO2018107098) DOUBLE-ZERO-INDEX STRUCTURAL WAVEGUIDE
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Pub. No.: WO/2018/107098 International Application No.: PCT/US2017/065423
Publication Date: 14.06.2018 International Filing Date: 08.12.2017
IPC:
G10K 11/08 (2006.01) ,G10K 11/18 (2006.01) ,G10K 11/26 (2006.01) ,G10K 11/30 (2006.01)
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
K
SOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11
Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
08
Non-electric sound-amplifying devices, e.g. non-electric megaphones
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
K
SOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11
Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
18
Methods or devices for transmitting, conducting or directing sound
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
K
SOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11
Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
18
Methods or devices for transmitting, conducting or directing sound
26
Sound-focusing or directing, e.g. scanning
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
K
SOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11
Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
18
Methods or devices for transmitting, conducting or directing sound
26
Sound-focusing or directing, e.g. scanning
30
using refraction, e.g. acoustic lenses
Applicants:
SEMPERLOTTI, Fabio [US/US]; US
ZHU, Hongfei [US/US]; US
UNIVERSITY OF NOTRE DAME [US/US]; 1400 E Angela Blvd. South Bend, IN 46617, US
PURDUE RESEARCH FOUNDATION [US/US]; 1281 Win Hentschel Boulevard West Lafayette, IN 47906, US
Inventors:
SEMPERLOTTI, Fabio; US
ZHU, Hongfei; US
Agent:
NELSON, Plymouth, D.; US
Priority Data:
62/431,88009.12.2016US
62/508,56119.05.2017US
Title (EN) DOUBLE-ZERO-INDEX STRUCTURAL WAVEGUIDE
(FR) GUIDE D'ONDE STRUCTURAL À DOUBLE INDICE DE ZÉRO
Abstract:
(EN) An acoustic waveguide includes a plate having a first surface and an opposing second surface. The plate includes an incident portion and a transmission portion. A plurality of unit cells is arranged in an array having a predetermined shape. Each cell of the plurality of unit cells includes a mass located at a center of the unit cell and having a central axis perpendicular to the first surface. A channel is disposed in the first surface and surrounds the mass and a radius of revolution of the channel is a predetermined distance from the central axis. The mass is integrally formed as one piece with the plate. The array is configured such that an acoustic wave incident on the array from the incident portion emerges in the transmission portion.
(FR) L'invention concerne un guide d'ondes acoustiques comprenant une plaque ayant une première surface et une seconde surface opposée. La plaque comprend une partie incidente et une partie de transmission. Une pluralité de cellules unitaires sont disposées dans un réseau ayant une forme prédéterminée. Chaque cellule de la pluralité de cellules unitaires comprend une masse située au centre de la cellule unitaire et ayant un axe central perpendiculaire à la première surface. Un canal est disposé dans la première surface et entoure la masse, et un rayon de révolution du canal est une distance prédéterminée par rapport à l'axe central. La masse est formée d'un seul tenant avec la plaque. Le réseau est configuré de telle sorte qu'une onde acoustique incidente sur le réseau provenant de la partie incidente émerge dans la partie de transmission.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)