ppt

Ultrasonic beam focusing, emission and control learning materials

  • 2013-09-22
  • 857.5KB
  • Points it Requires : 2

Array element: The basic unit of electrical switching that makes up the linear array, which can be dozens to hundreds. The center distance between adjacent array elements is d < 2mm. The more array elements there are, the more scanning lines there are, and the better the image. Vibrator: A small crystal that vibrates independently. Several vibrators are electrically connected to form an array element to reduce side lobes. Multi-element combination work: When transmitting and receiving, a group of adjacent array elements work simultaneously, and the working aperture is relatively large.  

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