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Comparative Studies of Transistors- and Capacitors-Coupled QVCOs

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Proceedings of the National Academy of Sciences, India Section A: Physical Sciences Aims and scope Submit manuscript

Abstract

The comparative studies of realizing quadrature voltage-controlled oscillator (QVCO) with MOS transistors and capacitors are presented in this paper. The supply voltage, power consumption, chip area, phase accuracy, phase noise, starting time and frequency tuning range of the two kinds of QVCOs are compared. The two kinds of QVCOs are simulated with GlobalFoundries’ 0.18 μm CMOS RF process, and the Cadence IC Design Tools post-layout simulation results demonstrate that the MOS transistors-coupled QVCO has a low supply voltage, low power consumption and improved phase accuracy; the capacitors-coupled QVCO has low phase noise and short starting time; the chip area and other parameters of the two kinds of QVCOs are the same. The two kinds of QVCOs satisfy the average requirements of modern RF transceivers, so the MOS transistors-coupled QVCO is suitable for low-voltage, low-power-consumption and strict accurate phase requirement transceivers.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China [Grant No. 61561022]; the Natural Science Foundation of Hunan Province [Grant No. 2017JJ3254]; and the Education Department of Hunan Province outstanding youth project [Grant No. 16B212].

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Authors and Affiliations

  1. School of Information and Electrical Engineering, Hunan University of Science and Technology, Xiangtan, China

    Jie Jin

  2. College of Information Science and Engineering, Jishou University, Jishou, 416000, China

    Jie Jin

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Correspondence to Jie Jin.

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Jin, J. Comparative Studies of Transistors- and Capacitors-Coupled QVCOs. Proc. Natl. Acad. Sci., India, Sect. A Phys. Sci. 90, 527–534 (2020). https://doi.org/10.1007/s40010-019-00596-6

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