Radio Frequency Applications of Barium Strontium Titanate Thin Film Tunable Capacitors

Abstract

Properties of thin film barium strontium titanate (BST) based capacitors for RF and microwave components were studied. The capacitors were measured for their tunability, loss tangent, frequency dependence of dielectric permittivity, and behavior at large RF signal amplitudes. A nonlinear equivalent circuit model for tunable BST capacitors was developed. Analysis of a tunable low pass filter fabrication using BST capacitors along with its intermodulation distortion measurements was given. Several simulations for bandpass filters were performed. Furthermore, a periodically loaded coplanar waveguide phase shifter utilizing the BST capacitors was designed.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2000
Accession Number
ADA459864

Entities

People

  • Ali Tombak

Organizations

  • North Carolina State University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Barium Strontium Titanates
  • Capacitors
  • Chemical Vapor Deposition
  • Dielectric Permittivity
  • Elements
  • Fabrication
  • Films
  • Frequency
  • Lc Circuits
  • Literature Surveys
  • Materials
  • Materials Science
  • Metals
  • Microwave Frequency
  • Radio Frequency
  • Thin Films
  • Transmission Lines

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Materials Science and Engineering.
  • Phased Array Antenna Design.