Accession Number : AD0880354

Title :   Microwave High Dielectric Constant Materials - Task II.

Descriptive Note : Final rept. 1 Jul 69-30 Jun 70,

Corporate Author : IIT RESEARCH INST CHICAGO IL

Personal Author(s) : Mountvala, A. J. ; Freiman, S. W. ; Knox, R. M. ; Onesto, E. J.

Report Date : NOV 1970

Pagination or Media Count : 78

Abstract : A theoretical analysis was performed to determine the properties and basic parameters needed to prepare high dielectric constant (>90), low loss (tan delta <0.0003) and low temperature coefficient of dielectric constant (<.00004/C) ceramic materials for microwave applications. On the basis of this analysis, glass-ceramic materials having a variety of dielectric properties were prepared and screened. Major emphasis was placed on evaluating the effects of various heat treatments and compositions on the dielectric behavior of BaTiO3-SrTiO3 glass-ceramics at microwave frequencies (1 to 12GHz). (Author)

Descriptors :   (*CERAMIC MATERIALS, DIELECTRIC PROPERTIES), DIELECTRICS, GLASS, HEAT TREATMENT, BARIUM COMPOUNDS, STRONTIUM COMPOUNDS, TITANATES, MICROWAVE FREQUENCY, CRYSTALLIZATION, MATHEMATICAL MODELS, BISMUTH COMPOUNDS, ALUMINATES, BORATES, MEASUREMENT, ATTENUATION.

Subject Categories : Ceramics, Refractories and Glass
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE