FERROELECTRIC CERAMIC FILTERS, IF TRANSFORMERS, AND NETWORKS.

Abstract

Research was continued towards the development of ferroelectric ceramic filters, intermediate frequency transformers, and networks. Energy trapping is proposed as an explanation for the behavior of high frequency AT-cut quartz resonators. Energy trapping gives a theoretical basis for the high Q sub m observed for quartz resonators mounted on low Q supports and for the low inter-resonator coupling observed for multiresonator wafers. Measurements in support of the energy trapping theory have been obtained with AT-cut quartz wafers by measuring inter-resonator coupling and the coupling between resonator and an absorbing edge of the wafer. Some improvement has been obtained in piezoelectric ceramic thickness resonators by using hot-pressing fabrication techniques. Results are discussed for three ceramic fabrication techniques. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 16, 1963
Accession Number
AD0418263

Entities

People

  • Damian Curran
  • W. J. Gerber

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Couplings
  • Fabrication
  • Frequency
  • Hot Pressing
  • Intermediate Frequencies
  • Measurement
  • Quartz Resonators
  • Resonators
  • Thickness
  • Transformers

Fields of Study

  • Physics

Readers

  • Microwave Engineering.