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A Low-Power SiGe Tunable Synchronous Oscillator for UMTS Downlink

Jean-Baptiste BEGUERET, Thierry TARIS, Herve LAPUYADE, Yann DEVAL

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Summary :

An ultra-low power 4.3 GHz Synchronous Oscillator (SO) is presented, integrated in a 0.25 µm BiCMOS SiGe technology, to act as the RF loop of an UMTS double-loop synthesizer. This SO is tunable in order to counteract technology discrepancies. Hence, the synchronization range is smaller, reducing unwanted synchronization and improving the frequency generation accuracy. This 1.8 V SO provides a -115 dBc/Hz phase noise at 100 kHz offset, consuming only 3.6 mW.

Publication
IEICE TRANSACTIONS on Electronics Vol.E86-C No.8 pp.1422-1426
Publication Date
2003/08/01
Publicized
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DOI
Type of Manuscript
Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
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