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Correction factor for strongly reflecting U-path RACs.

F Huang1

  • 1Sch. of Electron. and Electr. Eng., Birmingham Univ.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|January 1, 1990
PubMed
Summary
This summary is machine-generated.

Simplified equations for surface-acoustic-wave (SAW) reflective array compressors (RACs) with large time-bandwidth products improve understanding of multiple reflections. This aids designers in optimizing RAC performance by clarifying parameter effects.

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Area of Science:

  • Acoustics
  • Electrical Engineering
  • Signal Processing

Background:

  • Surface-acoustic-wave (SAW) reflective array compressors (RACs) are crucial for signal processing applications.
  • Understanding multiple reflections is essential for optimizing RAC performance.

Purpose of the Study:

  • To simplify existing equations for multiple reflections in U-path SAW RACs.
  • To provide designers with a more convenient expression for analyzing RAC performance.

Main Methods:

  • Mathematical simplification of existing literature equations for large time-bandwidth product RACs.
  • Numerical verification of empirical extensions for higher-order and variable weighting.

Main Results:

  • A simplified expression for multiple reflections in U-path SAW RACs was derived.
  • The expression includes phase and amplitude correction factors for weakly reflecting RACs.
  • Down-chirp behavior and empirical extensions were analyzed.

Conclusions:

  • The simplified expression offers a clearer understanding of how various parameters impact RAC performance.
  • The findings facilitate improved design and optimization of SAW RACs.
  • Further exploration into variable chirp possibilities is suggested.