Compact temperature stabilized crystal oscillator
US5703542A · kind A · utility
12Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 28, 1996 |
| Grant date | Dec 30, 1997 |
| Priority date | — |
| Expiry date | Aug 28, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/284
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A compact temperature controlled crystal oscillator employs a high conductivity heat spreader bonded to one side of a printed circuit board into the crystal. Heaters are arranged at edges of the circuit board and a temperature sensor for the temperature regulation circuitry is centered in the circuit board with components of high thermal sensitivity being placed in zones closer to the temperature sensor. An operating temperature of the heat spreader is selected by measuring multiple operating temperatures at different ambient temperatures and picking an operating temperature that causes a least absolute frequency deviation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.