Title (en)

Broadband phased array transducer design with frequency controlled two dimension capability and methods for manufacture thereof.

Title (de)

Breitbandige phasengesteuerte Gruppenwandlerentwurf mit frekwenzkontrollierte Zwei-dimensionale Mögligkeit und Verfahren zu ihrer Produktion.

Title (fr)

Conception d'un réseau d'antennes à commande de phase ayant des possibilités à deux dimensions contrÔlé par fréquence et procédé pour sa production.

Publication

EP 0641606 A3 19960612 (EN)

Application

EP 94306515 A 19940905

Priority

• US 11786893 A 19930907
• US 11786993 A 19930907

Abstract (en)

[origin: EP0641606A2] There is provided a transducer array with a plurality of piezoelectric elements having a minimum and maximum thickness. In one embodiment, the maximum thickness is less than or equal to 140 percent of the minimum thickness. In an alternate embodiment, the maximum thickness is greater than 140 percent of the minimum thickness and the transducer array is capable of simulating the excitation of a wider aperture twodimensional transducer array. One or more matching layers may be used to further increase bandwidth performance. In addition, a two crystal transducer element as well as a composite transducer structure may be formed using the principles of this invention.

IPC 1-7

B06B 1/06

IPC 8 full level

G01N 29/24 (2006.01); A61B 8/00 (2006.01); B06B 1/06 (2006.01); G01S 7/02 (2006.01); G10K 11/32 (2006.01); H04R 17/00 (2006.01); H04R 31/00 (2006.01); H10N 30/20 (2023.01); H04R 17/08 (2006.01)

CPC (source: EP)

B06B 1/0622 (2013.01); B06B 1/0644 (2013.01); G10K 11/32 (2013.01); H04R 17/08 (2013.01)

Citation (search report)

• [XY] US 4350917 A 19820921 - LIZZI FREDERIC L, et al
• [YP] US 5291090 A 19940301 - DIAS J FLEMING [US]
• [A] US 4485321 A 19841127 - KLICKER KENNETH A [US], et al
• [A] GB 2190818 A 19871125 - BRUEEL & KJAER AS
• [A] EP 0346891 A2 19891220 - MATSUSHITA ELECTRIC IND CO LTD [JP]
• [A] US 4016751 A 19770412 - KOSSOFF GEORGE
• [A] GB 2079456 A 19820120 - SECOND FOUND
• [Y] US 4963782 A 19901016 - BUI TUAN [AU], et al
• [YA] DE 2508023 A1 19750828 - TSNII TECHNOLOGII MASH
• [A] US 3833825 A 19740903 - HAAN D
• [A] US 4485321 A 19841127 - KLICKER KENNETH A [US], et al
• [A] EP 0285482 A1 19881005 - THOMSON CSF [FR]
• [XY] US 4866683 A 19890912 - PHILLIPS MORRIS J [US]
• [YA] GB 2079102 A 19820113 - MATSUSHITA ELECTRIC IND CO LTD
• [A] EP 0145429 A2 19850619 - TOSHIBA KK [JP]
• [A] US 3666979 A 19720530 - MCELROY JERRY T
• [A] URICK: "Principles of underwater sound", 1975, MCGRAW-HILL, NEW YORK, NY, USA, XP002000419
• [YD] SCHROPE B ET AL: "SIMULATED CAPILLARY BLOOD FLOW MEASUREMENT USING A NONLINEAR ULTRASONIC CONTRAST AGENT1", ULTRASONIC IMAGING, vol. 14, no. 2, 1 April 1992 (1992-04-01), pages 134 - 158, XP000270104
• [A] BARTHE P G ET AL: "A STAIRCASE MODEL OF TAPERED-THICKNESS PIEZOELECTRIC CERAMICS", JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, vol. 89, no. 3, 1 March 1991 (1991-03-01), pages 1434 - 1442, XP000200884

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 0641606 A2 19950308; EP 0641606 A3 19960612; EP 0641606 B1 20000202; AT E189415 T1 20000215; AU 688334 B2 19980312; AU 7020994 A 19950323; CA 2129946 A1 19950308; CA 2129946 C 19980929; DE 69422867 D1 20000309; DE 69422867 T2 20001207; JP 3478874 B2 20031215; JP H07107595 A 19950421

DOCDB simple family (application)

EP 94306515 A 19940905; AT 94306515 T 19940905; AU 7020994 A 19940810; CA 2129946 A 19940811; DE 69422867 T 19940905; JP 19920094 A 19940824