Title :
A 5 GHz above-IC FBAR low phase noise balanced oscillator
Author :
Aissi, Mohammed ; Tournier, Eric ; Dubois, Marc Alexandre ; Billard, Christophe ; Ziad, Hocine ; Plana, Robert
Author_Institution :
LAAS, Toulouse
Abstract :
In this paper, a 5 GHz FBAR based balanced oscillator is presented. The FBAR resonator was integrated directly above the 0.35 mum BiCMOS IC oscillator. The use of the balanced configuration allows dividing by two the electrodes resistance of the FBAR. Therefore, better phase noise is obtained comparatively to the single ended version. The measured phase noise is -121 dBc/Hz at 100 kHz from 5.46 GHz carrier frequency. Furthermore, the differential output allows direct driving of the divider and mixer, which are generally balanced, without the need of a single-ended to differential converter
Keywords :
BiCMOS integrated circuits; acoustic resonators; bulk acoustic wave devices; frequency dividers; integrated circuit noise; microwave oscillators; mixers (circuits); phase noise; 0.35 micron; 100 kHz; 5 GHz; 5.46 GHz; BiCMOS IC oscillator; FBAR balanced oscillator; FBAR resonator; differential converter; electrodes resistance; film bulk acoustic wave resonators; low phase noise balanced oscillator; BiCMOS integrated circuits; Electrical resistance measurement; Electrodes; Film bulk acoustic resonators; Frequency measurement; Mixers; Noise measurement; Oscillators; Phase measurement; Phase noise;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2006 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9572-7
DOI :
10.1109/RFIC.2006.1651082
