Crystal oscillator with a temperature-compensating analog circuit
US5883550A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1997 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Apr 15, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B5/32
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A temperature-compensated quartz oscillator comprises a stabilized power supply circuit (1) for supplying a constant voltage, an oscillation circuit (2) comprising a quartz resonator (21) and a varicap (22), a temperature detecting circuit (3) for producing a detected voltage signal (V.sub.Temp) corresponding to an oscillator part temperature by the use of the temperature-voltage characteristic of a temperature detecting element located in the vicinity of the oscillation circuit (2), and a temperature characteristic compensating portion (4) for producing through analog processing of the detected voltage signal (V.sub.Temp) a varicap control voltage signal (V.sub.VR) to be supplied to the varicap (22).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.