Accession Number : AD0638914

Title :   PRODUCTION ENGINEERING MEASURE FOR YIG SPHERES AND LIMITERS.

Descriptive Note : Final rept., 29 May 63-21 Mar 66.

Corporate Author : SPERRY MICROWAVE ELECTRONICS CO CLEARWATER FLA

Personal Author(s) : Wickett ,R. L. ; Hodges,L. R. , Jr. ; Tribby,D. E.

Report Date : 21 MAR 1966

Pagination or Media Count : 132

Abstract : Single crystal formulae, with accompanying firing methods and procedures were developed and successfully tested during this program. A high degree of reliability in meeting predicted magnetization and linewidth values has been demonstrated. Single crystal, spherical resonators were formed and polished in production quantities; they demonstrated the desired electrical characteristics necessary for use in the power limiters. Microwave power limiters, making use of the spherical resonators, were designed and fabricated in the four required bands. These power limiters exhibited the required electrical and environmental characteristics as called out in General Specification SCL-5916A. Equipment and techniques necessary to form and polish YIG spheres was designed and fabricated during this program. This equipment was thoroughly tested and found to meet the program requirements. The limiter production run was performed, and 40 units were successfully assembled and tested using the design, assemble and test techniques developed for use on this program. The sphere production run produced 70 pure YIG and 70 GaYIG spheres of good quality, in the required diameters. The limiter and sphere production runs successfully demonstrated the capability of meeting the production requirements as outlined at the start of the program. (Author)

Descriptors :   (*FERROELECTRIC CRYSTALS, MANUFACTURING), (*LIMITERS, MANUFACTURING), (*SPHERES, SINGLE CRYSTALS), YTTRIUM COMPOUNDS, IRON COMPOUNDS, GARNET, ENCAPSULATION, FERROMAGNETIC MATERIALS, RESONATORS, MICROWAVE EQUIPMENT

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE