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Related Experiment Videos

A concave annular array design, based on phasor summation--Part I: Design methodology.

W Q Yuan1, S A Johnson, M J Berggren

  • 1Department of Electrical Engineering, University of Utah, Salt Lake City 84112.

Ultrasonic Imaging
|October 1, 1988
PubMed
Summary
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This study introduces a new design method for annular arrays using phasor summation. This approach optimizes signal strength and focus depth by evaluating trade-offs in array parameters.

Area of Science:

  • Acoustics and Array Signal Processing

Background:

  • Annular arrays are crucial in various applications requiring directional signal transmission and reception.
  • Phasor summation is a fundamental technique for analyzing wave interference and signal combining.

Purpose of the Study:

  • To develop a detailed design methodology for annular arrays utilizing phasor summation.
  • To enable designers to systematically evaluate trade-offs between signal strength, array efficiency, and focal depth.

Main Methods:

  • The core method involves calculating the net phase shift across each annulus via phasor summation.
  • This method facilitates the quantitative assessment of design parameters influencing array performance.

Main Results:

  • A concave annular array was successfully fabricated based on the developed design method.

Related Experiment Videos

  • Illustrative graphs demonstrate the evaluation of trade-offs for a specific array design.

    • Conclusions:

    • The presented phasor summation-based design method provides a robust framework for optimizing annular array performance.
    • This approach allows for informed decisions regarding signal strength, efficiency, and focal depth in practical applications.