PRECISION GLASS CRYSTAL UNITS
Abstract
Research was continued to develop a series of precision glass crystal units designed to operate on the fundamental mode, in the frequency range of 1 to 5 mc per second. The vacuum system being used, a fluidless type, is described, together with fixturing used to plate directly to frequency, and to seal the HC-27/U holders. A design for 3 mc has yielded a Q of 1 x 10 to the 6th power. Details are given. At 1 mc, shaping the crystal units by cutting the sides, to get to 0.555 inches on one diameter, resulted in a substantial increase in resistance, hence achieving the specified Q is more doubtful. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1962
- Accession Number
- AD0277180
Entities
People
- Louis A. Dick
- R.d. Cortright