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A 84% tuning range, 4.3-GHz VCO with two-step negative-Gm tuning and amplitude calibration loop

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Abstract

This paper presents wideband, low voltage CMOS LC-VCO with automatic two-step amplitude calibration loop to compensate the PVT variation. To cover the wide tuning range, digital automatic negative-Gm tuning loop and analog automatic amplitude calibration loop are proposed. The power consumption is 2–6 mA from a 1.2 V supply. The VCO tuning range is 3.4 GHz, from 2.35 to 5.75 GHz. The measured phase noise is −117 dBc/Hz at the 1 MHz offset when the center frequency is 4.313 GHz.

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Acknowledgment

This work was supported by the IT R&D program of MKE/KEIT, [10035236-2010-01, Development of Wireless System for Smart Utility Network].

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Authors and Affiliations

  1. Department of Electronic Engineering, Konkuk University, Seoul, Korea

    Joon-Sung Park, SangWoo Kim, YoungGun Pu & Kang-Yoon Lee

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  1. Joon-Sung Park
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  2. SangWoo Kim
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  3. YoungGun Pu
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  4. Kang-Yoon Lee
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Correspondence to Kang-Yoon Lee.

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Park, JS., Kim, S., Pu, Y. et al. A 84% tuning range, 4.3-GHz VCO with two-step negative-Gm tuning and amplitude calibration loop. Analog Integr Circ Sig Process 66, 441–447 (2011). https://doi.org/10.1007/s10470-010-9583-4

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  • DOI: https://doi.org/10.1007/s10470-010-9583-4

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