DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click HERE
to register or log in.
High Performance Crystal Oscillator Development.
Final rept. Aug 79-Feb 84,
FREQUENCY ELECTRONICS INC MITCHEL FIELD NY
Pagination or Media Count:
This contract calls for design, development, fabrication and test of a fast warm-up crystal oscillator operating at 5 MHz and 10 MHz. Test results of earlier model oscillators indicated that further reductions of inner oven and oscillator assembly mass was required. In addition, an approved method of coupling heat into the crystal blank was worked on. In order to reduce mass, redesign of the electronic circuitry from discrete circuits to IC and Hybrid designs was accomplished. Four hybridized circuits were designed, fabricated and tested RF Amplifier Hybrid, Colpitts Oscillator Hybrid, Oven Control Hybrid, Pierce Oscillator Hybrid. Two different oscillators, each with SC-cut crystals were designed, built and tested, using RF Amplifier Hybrids, Colpitts Oscillator Hybrids, and Oven Control Hybrids. Excellent results were achieved in short and long term stability, low power, g sensitivity, as well as reduced volume and weight. The Pierce oscillator was also a hybridized design, containing a 5 MHz, 5th overtone crystal. Preliminary test results were also satisfactory. Author
APPROVED FOR PUBLIC RELEASE