QUARTZ CRYSTAL UNITS FOR VERY HIGH FREQUENCIES.
Abstract
A method is briefly described for lapping and polishing round quartz crystals in the frequency range 20-180 Mc. The performance of crystals, made by this method, surpasses that of any other known crystals in this range. The average series resistance is 14 ohms at 75 Mc for the third, 40 ohms at 125 Mc for the fifth, and 55 ohms at 175 Mc for the seventh harmonic mode. Methods are described, the application of which will reduce unwanted modes and diminish the influence of the vibrational amplitude upon crystal parameters. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1966
- Accession Number
- AD0634447
Entities
People
- Eduard A. Gerber
Organizations
- United States Army Communications-Electronics Command