Low Phase Noise Wide Tuning Range LC Oscillator for RF Application Using Varactor Bank.

Pradeep Rajpoot; R. C. Gurjar; R. S. Gamad

Low Phase Noise Wide Tuning Range LC Oscillator for RF Application Using Varactor Bank.

Authors

Pradeep Rajpoot Instrumentation Department, Shri GS Institute of Technology and Science, Indore, India.
R. C. Gurjar Instrumentation Department, Shri GS Institute of Technology and Science, Indore, India.
R. S. Gamad Instrumentation Department, Shri GS Institute of Technology and Science, Indore, India.

Keywords:

Dual Pair Cross Coupled, Phase Noise, Power dissipation, Quadrature LC VCO, Tuning Range,

Abstract

This paper presents the design of a QVCO (Quadrature voltage controlled oscillator) with high tuning range and low phase noise for Radio Frequency applications. The proposed VCO has been designed to produce quadrature signal by using cross coupled topology. Extra pair of MOSFETS are added to improve the quality factor of the LC tank, which helps to improve the phase noise. The tuning range of VCO ranges from 3.8 GHz to 4.52 GHz, which is nearly 20%. Additionally, the obtained phase noise is -120.31 dBc/Hz at 1MHz offset frequency. The observed power dissipation is 13.21 mW.

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Published

2019-09-30

How to Cite

Rajpoot, P., Gurjar, R. C., & Gamad, R. S. (2019). Low Phase Noise Wide Tuning Range LC Oscillator for RF Application Using Varactor Bank. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 11(3), 31–36. Retrieved from https://jtec.utem.edu.my/jtec/article/view/5399