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Design of a 41.14–48.11 GHz Triple Frequency Based VCO

Department of Electronic, Faculty of Engineering, University of Zanjan, Zanjan 4537138111, Iran
Department of Electronics and Telecommunications, Politecnico di Torino, 10129 Turin, Italy
Department of Energy, Politecnico di Torino, 10129 Turin, Italy
Author to whom correspondence should be addressed.
Electronics 2019, 8(5), 529;
Received: 12 April 2019 / Revised: 5 May 2019 / Accepted: 7 May 2019 / Published: 11 May 2019
(This article belongs to the Section Circuit and Signal Processing)
PDF [2302 KB, uploaded 14 May 2019]


Growing deployment of more efficient communication systems serving electric power grids highlights the importance of designing more advanced intelligent electronic devices and communication-enabled measurement units. In this context, phasor measurement units (PMUs) are being widely deployed in power systems. A common block in almost all PMUs is a phase locked oscillator which uses a voltage controlled oscillator (VCO). In this paper, a triple frequency based voltage controlled oscillator is presented with low phase noise and robust start-up. The VCO consists of a detector, a comparator, and triple frequency. A VCO starts-up in class AB, then steadies oscillation in class C with low current oscillation. The frequency of the VCO, which is from 13.17 GHz to 16.03 GHz, shows that the frequency is tripling to 41.14–48.11 GHz. Therefore, its application is not limited to PMUs. This work has been simulated in a standard 0.18 µm CMOS process. The simulated VCO achieves a phase noise of −99.47 dBc/Hz at 1 MHz offset and −121.8 dBc/Hz at 10 MHz offset from the 48.11 GHz carrier. View Full-Text
Keywords: CMOS; phase noise; phasor measurement unit; power; triple frequency; VCO CMOS; phase noise; phasor measurement unit; power; triple frequency; VCO

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Nasri, A.; Toofan, S.; Estebsari, M.; Estebsari, A. Design of a 41.14–48.11 GHz Triple Frequency Based VCO. Electronics 2019, 8, 529.

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