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J. Electromagn. Eng. Sci > Volume 10(1); 2010 > Article
Journal of the Korean Institute of Electromagnetic and Science 2010;10(1):35-38.
DOI: https://doi.org/10.5515/JKIEES.2010.10.1.035   
A Parallel Coupled QVCO and Differential Injection-Locked Frequency Divider in 0.13 μm CMOS
Bong-Hyuk Park, Kwang-Chun Lee
Mobile RF Research Team, Electronics and Telecommunications Research Institute
A fully integrated parallel-coupled 6-GHz quadrature voltage-controlled oscillator (QVCO) has been designed. The symmetrical parallel-coupled quadrature VCO is implemented using 0.13-${mu}m$ CMOS process. The measured phase noise is -101.05 dBc/Hz at an offset frequency of 1 MHz. The tuning range of 710 MHz is achieved with a control voltage ranging from 0.3 to 1.4 V. The average output phase error is about $1.26^{circ}$ including cables and connectors. The QVCO dissipates 10 mA including buffer from the 1.5 V supply voltage. The output characteristic of the differential injection-locked frequency divider (DILFD), which has similar topology to the QVCO, is presented.
Key words: QVCO, CMOS, Phase Noise, Phase Error, DILFD
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