Which transducer would be most suitable to electronically steer and focus the beam?

Which transducer would be most suitable to electronically steer and focus the beam?

• A. Linear array
• B. Annular array
• C. Phased array
• D. Curved array

Answer: (C)

Beaming control comes from how the signals are timed across multiple elements. A phased array uses precise time delays on each element so the waves add up in a specific direction, steering the beam, and the delays can be adjusted with depth to focus the beam. This electronic steering and dynamic focusing happen without moving the transducer, making the phased array the most suitable choice. Other designs mainly rely on geometry for focusing or have limited steering capability, so they don’t offer the same flexible, across-the-board electronic steering and focusing that a phased array provides.

Beaming control comes from how the signals are timed across multiple elements. A phased array uses precise time delays on each element so the waves add up in a specific direction, steering the beam, and the delays can be adjusted with depth to focus the beam. This electronic steering and dynamic focusing happen without moving the transducer, making the phased array the most suitable choice. Other designs mainly rely on geometry for focusing or have limited steering capability, so they don’t offer the same flexible, across-the-board electronic steering and focusing that a phased array provides.