Which statement describes how a single beam is formed in a convex sequential array?

Which statement describes how a single beam is formed in a convex sequential array?

• A. All crystals are fired simultaneously
• B. No crystals are fired
• C. Some but not all crystals are fired
• D. Crystals are fired in alternating groups

Answer: (C)

In a convex sequential array, forming a single beam relies on beamforming through sequential firing. The curved arrangement means you activate only a portion of the crystal elements at a time, with precise timing so the emitted waves from the fired elements combine constructively in the desired direction. This sequential firing across different groups creates one coherent beam that can be steered and scanned as each group fires. If all crystals fired together, the energy would spread widely and lose the tight focus needed for a single beam. If none fired, there would be no beam. If alternating groups fired, you’d risk producing multiple, separate beams rather than one continuous beam. So, firing some but not all crystals at a time best describes how a single beam is formed.

In a convex sequential array, forming a single beam relies on beamforming through sequential firing. The curved arrangement means you activate only a portion of the crystal elements at a time, with precise timing so the emitted waves from the fired elements combine constructively in the desired direction. This sequential firing across different groups creates one coherent beam that can be steered and scanned as each group fires. If all crystals fired together, the energy would spread widely and lose the tight focus needed for a single beam. If none fired, there would be no beam. If alternating groups fired, you’d risk producing multiple, separate beams rather than one continuous beam. So, firing some but not all crystals at a time best describes how a single beam is formed.