Title :
RF oscillators stabilized by temperature compensated HBARs based on LiNbO3/Quartz combination
Author :
Baron, T. ; Martin, G. ; Lebrasseur, E. ; François, B. ; Ballandras, S. ; Lasagne, P.-P. ; Reinhardt, A. ; Chomeloux, Luc ; Lesage, Jean-Marc ; Gachon, D.
Author_Institution :
Time & Freq. Dept., UFC, Besancon, France
Abstract :
In this work, we develop a radio-frequency oscillator operating near the 434 MHz-centered ISM band to validate the temperature compensated capability of HBAR based on combining LiNbO3 and Quartz single crystal plates for such purposes. Electrical and thermoelectric characterizations have shown QF product in excess of 1013 and a third order frequency-temperature behavior. A phase noise better than -160dBc/Hz at 100kHz has been measured as well as a -165dBc/Hz level at 1MHz from the carrier. First results showing that the resonator stability is better than 10-9 under room conditions. Further work is expected to lower that level well below 10-10.
Keywords :
acoustic resonators; compensation; crystal oscillators; lithium compounds; niobium compounds; radiofrequency oscillators; thermoelectricity; HBAR; ISM hand; LiNbO3; RF oscillator; frequency 1 MHz; frequency 100 kHz; frequency 434 MHz; high overtone bulk acoustic resonator; quartz single crystal plate; radiofrequency oscillator; resonator stability; temperature compensation; thermoelectric characterization; Harmonic analysis; Lithium niobate; Phase noise; Resonant frequency; Stability analysis; Thermal stability;
Conference_Titel :
Frequency Control and the European Frequency and Time Forum (FCS), 2011 Joint Conference of the IEEE International
Conference_Location :
San Fransisco, CA
Print_ISBN :
978-1-61284-111-3
DOI :
10.1109/FCS.2011.5977814
