Investigation of Voltage-Activated BAW Devices and Filters

Abstract

The overarching goal of this project was to better understand and exploit voltage-induced piezoelectricity in thin-film strontium titanate (STO) and barium-strontium titanate (BST), with the ultimate objective of creating high-performance, reconfigurable filters and frequency-agile RF components. Unlike conventional BAW technology, the piezoelectric coupling in BST is controlled by an applied DC field. In the absence of a DC field no acoustic resonance is observed; when a DC field is applied the device becomes piezoelectrically active and acts like a high-QBAW resonator, a fundamental building block for frequency-selective circuits.

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Document Details

Document Type
Technical Report
Publication Date
Sep 04, 2016
Accession Number
AD1050648

Entities

People

  • Robert York

Organizations

  • University of California, Santa Barbara

Tags

DTIC Thesaurus Topics

  • Acoustic Resonance
  • Acoustic Waves
  • Barium Strontium Titanates
  • Communication Systems
  • Electric Fields
  • Elements
  • Films
  • Frequency
  • Impedance
  • Insertion Loss
  • Materials
  • Measurement
  • Military Research
  • Q Factor
  • Resonance
  • Resonant Frequency
  • Resonators
  • Roughness
  • Scattering
  • Standards
  • Strontium
  • Surface Roughness
  • Thin Films
  • Titanates
  • Waves

Fields of Study

  • Engineering
  • Physics

Readers

  • Materials Science and Engineering.
  • Microwave Engineering.
  • Nanocomposite Materials Science