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Two-dimensional array transducer and beamformer

  • US 5,808,967 A
  • Filed: 10/07/1996
  • Issued: 09/15/1998
  • Est. Priority Date: 10/07/1996
  • Status: Expired due to Term
First Claim
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1. An acoustic system, comprising:

  • a plurality of transducer elements arranged to form a single two-dimensional array, wherein the elements are electrically connected into rows in a first dimension and columns in a second dimension and the rows are electrically independent of the columns;

    a first beamforming circuit forming a first plane of acoustic beams projected outside of the array plane and substantially normal to the first transducer array dimension, the first beamforming circuit electrically connected to the transducer elements in the second transducer array dimension, wherein the first beamforming circuit delays signals associated, respectively, with each column; and

    a second beamforming circuit forming a first plane of acoustic beams projected outside of the array plane and substantially normal to the second transducer array dimension, the second beamforming circuit electrically connected to the transducer elements in the first array dimension, wherein the second beamforming circuit delays signals associated, respectively, with each row, the system thereby capable of forming at least two planes of acoustic beams.

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