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Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
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Design and Analysis of MEMS Linear Phased Array.

Guoxiang Fan1, Junhong Li2, Chenghao Wang3

  • 1State Key Laboratory of Acoustics, Chinese Academy of Sciences, Beijing 100190, China. fanguoxiang13@mails.ucas.ac.cn.

Micromachines
|November 9, 2018
PubMed
Summary
This summary is machine-generated.

This study designed a micro-electro-mechanical system (MEMS) linear phased array with multi-cell elements to enhance sound pressure. Optimizing array parameters significantly improves 3D beam focusing, outperforming traditional arrays.

Keywords:
MEMSlinear phased arraythree-dimensional directivity“multi-cell” element

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Area of Science:

  • Acoustics
  • Micro-electro-mechanical systems (MEMS)
  • Array signal processing

Background:

  • High-frequency transducers in bending vibration mode require increased radiation sound pressure.
  • Traditional linear arrays have limitations in three-dimensional beam directivity.

Purpose of the Study:

  • To design a novel micro-electro-mechanical system (MEMS) linear phased array using a multi-cell element structure.
  • To enhance the radiation sound pressure of transducers operating at high frequencies in bending vibration mode.
  • To improve three-dimensional beam focusing capabilities.

Main Methods:

  • Theoretical analysis of the dynamic equation for a fixed rectangular composite plate.
  • Finite element method (FEM) simulations for resonant frequency prediction.
  • Comprehensive analysis of lateral and elevation directional parameters.

Main Results:

  • The multi-cell element design increases radiation sound pressure for high-frequency transducers.
  • Optimized lateral and elevation parameters significantly enhance three-dimensional beam focusing.
  • The proposed MEMS linear phased array demonstrates superior focusing compared to traditional designs.

Conclusions:

  • The designed MEMS linear phased array with multi-cell elements effectively boosts transducer performance.
  • Parameter optimization in both lateral and elevation directions is crucial for advanced beam focusing.
  • This approach offers a significant advancement over conventional linear array technology.