Accession Number : AD0832437

Title :   VHF FILTER CRYSTAL RESEARCH.

Descriptive Note : Quarterly rept. no. 4, 16 Oct 67-15 Jan 68,

Corporate Author : CLEVITE CORP CLEVELAND OH ELECTRONIC RESEARCH DIV

Personal Author(s) : Koneval, D. J. ; Sliker, T. R.

Report Date : MAY 1968

Pagination or Media Count : 32

Abstract : Progress was made toward the experimental realization of a new method for fabricating CdS-quartz composite resonators. Additional data were obtained on CdS single crystal resonators which support the conclusion that the frequency-temperature coefficients are relatively insensitive to the orientation angle between the c-axis and the normal to the electroded surfaces. This fact increases the practicality of CdS-quartz composite resonators with a zero frequency-temperature coefficient at room temperature. An approximate theory was developed for CdS which is in good agreement with the data on the frequency-temperature coefficients. The frequency response of an inverted mesa resonator was shown to be relatively free of spurious modes at 380 MHz. (Author)

Descriptors :   (*QUARTZ RESONATORS, MANUFACTURING), (*CRYSTAL FILTERS, VERY HIGH FREQUENCY), CADMIUM SULFIDES, SINGLE CRYSTALS, DIELECTRIC PROPERTIES, TEMPERATURE, RESONANT FREQUENCY, SILICON COMPOUNDS, THEORY, VACUUM APPARATUS, VAPOR PLATING, PIEZOELECTRIC TRANSDUCERS, RADIOFREQUENCY FILTERS.

Subject Categories : Electrical and Electronic Equipment
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE