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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
. - S. 827-830
ISBN 1-4244-0073-2
DOI: https://doi.org/10.1109/FREQ.2006.275496
Abstract
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.
Weitere Angaben
| Publikationsform: | Aufsatz in einem Buch |
|---|---|
| Begutachteter Beitrag: | Nein |
| Institutionen der Universität: | Fakultäten Fakultäten > Fakultät für Ingenieurwissenschaften Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Mess- und Regeltechnik Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Mess- und Regeltechnik > Lehrstuhl Mess- und Regeltechnik - Univ.-Prof. Dr.-Ing. Gerhard Fischerauer |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 17 Nov 2021 10:52 |
| Letzte Änderung: | 17 Nov 2021 10:52 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/67861 |