Acoustical cross-talk in row–column addressed 2-D transducer arrays for ultrasound imaging

Thomas Lehrmann Christiansen, Jørgen Arendt Jensen, Erik Vilain Thomsen

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Abstract

The acoustical cross-talk in row–column addressed 2-D transducer arrays for volumetric ultrasound imaging is investigated. Experimental results from a 2.7 MHz, λ/2-pitch capacitive micromachined ultrasonic transducer (CMUT) array with 62 rows and 62 columns are presented and analyzed in the frequency-wavenumber domain. The sources of cross-talk are identified and predicted theoretically. The nearest neighbor cross-talk is 23.9±3.7 dB when the array is used as a 1-D array with the rows functioning as both transmitters and receivers. In the row–column configuration, with the columns transmitting and the rows receiving, the cross-talk is reduced to 40.2±3.5 dB.
Original languageEnglish
JournalUltrasonics
Volume63
Pages (from-to)174–178
Number of pages5
ISSN0041-624X
DOIs
Publication statusPublished - 2015

Keywords

  • Cross-talk
  • 2-D transducer array
  • Row-column
  • CMUT
  • Volumetric ultrasound imaging

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