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US5488956A
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Ultrasonic transducer array with a reduced number of transducer elements
Assignee: Siemens AG
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Filing: 1994-09-23
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Granted: 1996-02-06
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Expires: 2014-09-23
Abstract
Abstract An ultrasonic transducer array in which distances between the array's transducer elements (T ij ) increase in the direction of the rows (x direction) and in the direction of the columns (y direction) from a center of symmetry (S) outward. The integral over a straight-line function f(x) and/or g(y), which steeply decreases on either side of a center of symmetry (S) between the center points (M ij ) of adjacent transducer elements (T ij ), is constant for each row and/or column. Thus, the number of transducer elements (T ij ) is reduced without considerable deterioration of the beam characteristic of the transducer array.
Inventors
- 👤 Hartmut Bartelt
- 👤 Ekkert Bartosch
- 👤 Peter Kraemmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:48
CPC Classifications
A; A61; A61B; A61B8/00; A61B8/44; A61B8/4483; A61B8/4494; B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; B06B1/0622; B06B1/0629; G; G01; G01S; G01S15/00; G01S15/88; G01S15/89; G01S15/8906; G01S15/8909; G01S15/8915; G01S15/8925
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Hanning function that decreases monotonously on either side of the center of symmetry.
Claim 2
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Hanning function that decreases monotonously on either side of the center of symmetry.
Claim 3
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Hamming function that decreases monotonously on either side of the center of symmetry.
Claim 4
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Hamming function that decreases monotonously on either side of the center of symmetry.
Claim 5
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Riesz function that decreases monotonously on either side of the center of symmetry.
Claim 6
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Riesz function that decreases monotonously on either side of the center of symmetry.
Claim 7
Dependent Claim
109 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a De la Valle-Puissin function that decreases monotonously on either side of the center of symmetry.
Claim 8
Dependent Claim
109 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a De la Valle-Puissin function that decreases monotonously on either side of the center of symmetry.
Claim 9
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Tukey function that decreases monotonously on either side of the center of symmetry.
Claim 10
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Tukey function that decreases monotonously on either side of the center of symmetry.
Claim 11
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Bohman function that decreases monotonously on either side of the center of symmetry.
Claim 12
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Bohman function that decreases monotonously on either side of the center of symmetry.
Claim 13
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Poisson function that decreases monotonously on either side of the center of symmetry.
Claim 14
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Poisson function that decreases monotonously on either side of the center of symmetry.
Claim 15
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Hanning-Poisson function that decreases monotonously on either side of the center of symmetry.
Claim 16
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Hanning-Poisson function that decreases monotonously on either side of the center of symmetry.
Claim 17
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Cauchy function that decreases monotonously on either side of the center of symmetry.
Claim 18
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Cauchy function that decreases monotonously on either side of the center of symmetry.
Claim 19
Dependent Claim
106 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Gauss function that decreases monotonously on either side of the center of symmetry.
Claim 20
Dependent Claim
106 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Gauss function that decreases monotonously on either side of the center of symmetry.
Claim 21
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Dolph-Chebyshev function that decreases monotonously on either side of the center of symmetry.
Claim 22
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Dolph-Chebyshev function that decreases monotonously on either side of the center of symmetry.
Claim 23
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Kaiser-Bessel function that decreases monotonously on either side of the center of symmetry.
Claim 24
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Kaiser-Bessel function that decreases monotonously on either side of the center of symmetry.
Claim 25
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Barcilon-Temes function that decreases monotonously on either side of the center of symmetry.
Claim 26
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Barcilon-Temes function that decreases monotonously on either side of the center of symmetry.
Claim 27
Dependent Claim
108 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is an Exact Blackman function that decreases monotonously on either side of the center of symmetry.
Claim 28
Dependent Claim
108 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is an Exact Blackman function that decreases monotonously on either side of the center of symmetry.
Claim 29
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Blackman function that decreases monotonously on either side of the center of symmetry.
Claim 30
Dependent Claim
107 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a Blackman function that decreases monotonously on either side of the center of symmetry.
Claim 31
Dependent Claim
109 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a minimum 3-sample Blackman-Harris function that decreases monotonously on either side of the center of symmetry.
Claim 32
Dependent Claim
109 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a minimum 3-sample Blackman-Harris function that decreases monotonously on either side of the center of symmetry.
Claim 33
Dependent Claim
109 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a minimum 4-sample Blackman-Harris function that decreases monotonously on either side of the center of symmetry.
Claim 34
Dependent Claim
109 words
An ultrasonic transducer array with at least one row running in an x direction of transducer elements, wherein in each row the distances between center points of adjacent transducer elements increase monotonously outward on either side of a center of symmetry with an x-coordinate x=0, wherein the x coordinates of the center points of the transducer elements in each row are selected so that a definite integral of a window function f(x) over x between center points of adjacent transducer elements is at least approximately constant and wherein said window function f(x) is a minimum 4-sample Blackman-Harris function that decreases monotonously on either side of the center of symmetry.
Claim 35
Dependent Claim
51 words
The ultrasonic transducer array according to one of claims 1 to 17 with at least three rows and at least three columns running in a y direction, perpendicular to the x direction, of transducer elements, wherein distances between center points of adjacent transducer elements also increase monotonously outward in each column.
References Cited (Backward Citations)
US2837728A
Cited
US2928068A
Cited
US4518889A
Cited
DE3334090C2
Cited
DE3437862C2
Cited
US4658176A
Cited
DE3733776A1
Cited
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