Which term describes the process of combining signals with time delays across the array to steer and focus the beam?

Davies Publishing SPI Test: Master the fundamentals of sonography with quizzes. Each question offers insights and explanations. Excel in your exam!

Multiple Choice

Which term describes the process of combining signals with time delays across the array to steer and focus the beam?

Explanation:
Phasing. In a phased array, you apply specific time delays (phase shifts) to the signals from each element so they combine constructively in a chosen direction. This alignment steers and focuses the beam toward that direction without physically moving the array, creating a sharper, directed signal pattern. Amplification, damping, and filtering perform other signal-processing roles—boosting, reducing, or shaping frequencies—without steering the beam.

Phasing. In a phased array, you apply specific time delays (phase shifts) to the signals from each element so they combine constructively in a chosen direction. This alignment steers and focuses the beam toward that direction without physically moving the array, creating a sharper, directed signal pattern. Amplification, damping, and filtering perform other signal-processing roles—boosting, reducing, or shaping frequencies—without steering the beam.

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