High Performance Low Cost Ferroelectric Phase Shifters Designed for Simple Biasing

Abstract

A novel approach in ferroelectric phase shifters design using Ba(sub x)Sr(sub (1-x))TiO3 (BSTO) films in a multilayer dielectric coplanar waveguide structure is described. By including a low loss dielectric layer (SiO2) between the coplanar waveguide conductors and the ferroelectric material in conjunction with a via to allow the signal conductors to contact the ferroelectric layer to employ biasing, significant reduction in insertion loss can be achieved in conjunction with a three fold increase in figure of merit (degree/dB) compared to the case with direct metallization on the ferroelectric layer.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2005
Accession Number
ADA448710

Entities

People

  • Clifford Tanaka
  • Magdy F. Iskander
  • Wayne Kim

Organizations

  • University of HawaiĘ»i System

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Antenna Arrays
  • Attenuation
  • Beam Steering
  • Dielectric Permittivity
  • Electric Fields
  • Ferroelectric Materials
  • Figure Of Merit
  • Films
  • Frequency
  • Impedance
  • Insertion Loss
  • Losses
  • Materials
  • Military Applications
  • Phase Shift
  • Thickness
  • Transmission Lines

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Microwave Engineering.