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Related Experiment Videos

Design on semiconductor coupled SAW convolver.

Kohji Hohkawa1, Takaya Suda, Yusuke Aoki

  • 1Kanagawa Institute of Technology, Japan. hohkawa@ele.kanagawa-it.ac.jp

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|May 7, 2002
PubMed
Summary

This study details a novel semiconductor-coupled surface acoustic wave (SAW) convolver. The device shows robust performance against frequency and temperature variations, demonstrating high convolution efficiency.

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Acoustics

Background:

  • Surface Acoustic Wave (SAW) devices are crucial for signal processing.
  • Semiconductor-coupled SAW convolvers offer potential for efficient signal convolution.
  • Optimizing efficiency and stability in SAW convolvers is an ongoing challenge.

Purpose of the Study:

  • To design and evaluate a semiconductor-coupled SAW convolver with enhanced efficiency.
  • To investigate the impact of device structure on performance robustness.
  • To validate the design through simulation and experimental testing.

Main Methods:

  • Utilizing bi-directionally propagating SAWs on a high-coupling piezoelectric substrate.
  • Employing bonded semiconductor diodes coupled via multistrip electrodes.

Related Experiment Videos

  • Implementing a diode-balanced bridge structure for non-linear operation.
  • Fabricating a test circuit using an epitaxial lift-off film-bonding process.

    • Main Results:

    • Achieved high convolution signal efficiency through the diode-balanced bridge structure.
    • Demonstrated robustness of multi-strip electrode tapping pitches against frequency and temperature variations.
    • Verified device effectiveness via circuit simulation and experimental testing.

    Conclusions:

    • The designed semiconductor-coupled SAW convolver exhibits high efficiency and stability.
    • The diode-balanced bridge structure is effective for efficient non-linear operation.
    • The device shows promise for advanced signal processing applications.