Design of a New LC VCO using Active Inductor

Authors

  • Taghizadeh S Department of Electrical Engineering, Fasa Branch, Islamic Azad University, Shiraz, Iran
  • Taghizadeh M Department of Electrical Engineering, Fasa Branch, Islamic Azad University, Shiraz, Iran
  • Taghizadeh P Department of Electrical Engineering, Fasa Branch, Islamic Azad University, Shiraz, Iran
  • Kamaly A Department of Electrical Engineering, Fasa Branch, Islamic Azad University, Shiraz, Iran
  • Emamghorashi SA Department of Electrical Engineering, Fasa Branch, Islamic Azad University, Shiraz, Iran

Keywords:

VCO, Ring, Phase noise, Frequency range

Abstract

In this paper, a novel differential LC voltage-controlled oscillator (VCO) is presented. The VCO is based on the gm-boosted structure to relax the oscillation start-up current requirement and reduce the DC power consumption in comparison to conventional Colpitts structures. In the proposed VCO, a tunable active inductor is utilized as a part of LC tank instead of passive inductor with constant inductance. The proposed VCO is designed and simulated in ADS in a 0.18μm CMOS process. Simulation results indicate that the proposed VCO has a wide tuning range in comparison to other reported designs while consumes less DC power.

References

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Published

2025-11-11

How to Cite

[1]
S. Taghizadeh, M. Taghizadeh, P. Taghizadeh, A. Kamaly, and S. A. Emamghorashi, “Design of a New LC VCO using Active Inductor”, Int. J. Comp. Sci. Eng., vol. 4, no. 12, pp. 27–30, Nov. 2025.

Issue

Vol. 4 No. 12 (2016): IJCSE December Edition

Section

Research Article

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