at Google ScholarTitle data
Roith, Bernd ; Gollwitzer, Andreas ; Lerner, Andreas ; Fischerauer, Gerhard:
Microcontroller-based temperature compensation scheme for two-port SAW oscillators.
In:
Proceedings of the 2006 IEEE International Frequency Control Symposium and Exposition ; Miami, Florida, 4-7 June, 2006. -
Piscataway, NJ
: IEEE
,
2006
. - pp. 827-830
ISBN 1-4244-0073-2
DOI: https://doi.org/10.1109/FREQ.2006.275496
Abstract in another language
We present a surface acoustic wave (SAW) two-port oscillator extended by a feedforward control circuit, the goal of which is to suppress the effects of the SAW resonator temperature characteristics on the oscillator output frequency. The control circuit consists of a temperature sensor near the SAW resonator the output signal of which is fed to the analog-to-digital converter (ADC) input of a microcontroller. An algorithm implemented on the microcontroller combines the information on the actual temperature and the temperature behavior of all oscillator components (known from previous measurement campaigns) to determine a compensation signal. The latter is fed to a phase shifter inserted in the oscillator feedback loop such that any temperature-induced changes in the round-trip phase shift of the oscillator loop are counteracted. An improvement factor in the frequency stability of 4.4 was demonstrated in the temperature range from 0 to 60 °C and can be further improved to a value of at least 10.
Further data
| Item Type: | Article in a book |
|---|---|
| Refereed: | No |
| Institutions of the University: | Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Measurement and Control Technology Faculties > Faculty of Engineering Science > Chair Measurement and Control Technology > Chair Measurement and Control Technology - Univ.-Prof. Dr.-Ing. Gerhard Fischerauer |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 600 Technology, medicine, applied sciences > 620 Engineering |
| Date Deposited: | 17 Nov 2021 10:52 |
| Last Modified: | 17 Nov 2021 10:52 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/67861 |