Reconfigurable mosaic annular arrays.

Area of Science:

• Ultrasound transducer technology
• Medical imaging systems
• Electrical engineering

Background:

• Traditional 1-D electronically scanned arrays face limitations in elevational focus.
• Highly integrated ultrasonic transducer subsystems are desired for future applications.
• Reconfigurable array (RA) transducer electronics assemblies offer a novel approach.

Purpose of the Study:

• To present Mosaic Annular Arrays (MAA) as a solution for highly integrated ultrasonic transducer subsystems.
• To discuss design tradeoffs for MAAs, including center frequency, element pitch, and switch-on resistance.
• To review efficient architectures for large-area RA implementations, considering RC delay effects.

Main Methods:

• Analysis of MAA advantages: beam quality, depth of field, elevational focus.
• Evaluation of cost, size, and power consumption benefits due to reduced beamforming channels.
• Exploration of design specifications and their impact on MAA performance.
• Development of architectures accounting for RC delay effects in large-area RAs.

Main Results:

• MAAs provide superior elevational focus compared to 1-D arrays.
• Potential for reduced cost, size, and power consumption in ultrasonic subsystems.
• Identification of key design tradeoffs for highly integrated arrays.
• Presentation of efficient architectures for large-area RAs, managing RC delay.

Conclusions:

• MAAs represent a promising advancement for future ultrasonic transducer subsystems.
• The design and architectural considerations presented facilitate the development of efficient, integrated ultrasonic systems.
• MAAs offer a pathway to improved ultrasonic imaging performance and system integration.