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Related Concept Videos

Ultrasonography01:17

Ultrasonography

Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called a...

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A silicon electrostatic ultrasonic transducer.

K Suzuki1, K Higuchi, H Tanigawa

  • 1NEC Corp., Kanagawa.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|January 1, 1989
PubMed
Summary
This summary is machine-generated.

This study presents an electric ultrasonic transducer fabricated using silicon integrated circuit (IC) processes. The developed transducer demonstrates high sensitivity and frequency response for air applications, enabling electronic sector scanning.

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Area of Science:

  • Electrical Engineering
  • Materials Science
  • Acoustics

Background:

  • Traditional ultrasonic transducers often require complex fabrication processes.
  • Integrating transducer elements with electronic control circuits can improve functionality.
  • Achieving high sensitivity and specific frequency responses in air is crucial for many applications.

Purpose of the Study:

  • To develop an electric ultrasonic transducer using a silicon IC process.
  • To achieve high sensitivity and desired frequency responses in air.
  • To demonstrate electronic sector scanning capabilities.

Main Methods:

  • Design considerations for high sensitivity and frequency response in air.
  • Fabrication of an electric ultrasonic transducer using silicon IC process.
  • Characterization of transmitter and receiver sensitivity.
  • Implementation of time-sequential driving for electronic sector scanning.

Main Results:

  • Transmitter sensitivity of 19.1 dB (0 dB=1 mubar/V) at 150 kHz, measured at 50 cm.
  • Receiver sensitivity of 0.47 mV/Pa within the 10-130 kHz range with low bias voltage (30 V).
  • Successful electronic sector scanning using a linear array of seven elements on a single chip.

Conclusions:

  • The silicon IC process enables the development of high-performance electric ultrasonic transducers.
  • The transducer exhibits excellent sensitivity and frequency response for air applications.
  • The integrated electronic scanning capability is beneficial for phased-array transducer design.