Octave tunable, highly linear, RC-ring oscillator with differential fine-coarse tuning, quadrature outputs and amplitude control for fiber optic transceivers

M. A.T. Sanduleanu, D. Van Goor, H. Veenstra

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

This paper presents a low-voltage, RC-ring oscillator for fiber optic transceivers (SDH/SONET applications). It has one octave coarse tuning range, differential tuning inputs, quadrature outputs and a linear fine-control. A replica biasing circuit regulates the common-mode voltage and the amplitude at the output. The oscillator has been realized in a pre-production 70GHz fT, SiGe, BiCMOS process (QUBIC4G). The tuning range covered with process and temperature variations is 3.4GHz-6.8GHz. At 6.6GHz oscillation frequency the measured phase noise is -92dBc/Hz @ 3MHz offset from the carrier. The typical power consumption of the VCO core is 80mW from a 2.5V power supply and the area is 0.3mm2.

Original languageBritish English
Pages (from-to)545-548
Number of pages4
JournalIEEE MTT-S International Microwave Symposium Digest
Volume1
StatePublished - 2002
Event2002 IEEE MTT-S International Microwave Symposium Digest - Seattle, WA, United States
Duration: 2 Jun 20027 Jun 2002

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