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

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

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.

Keywords


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

Full Text:

PDF

References


J. Chen, F. Jonsson, M. Carlsson, C. Hedenas, and L. R. Zheng, “A low power, start-up ensured and constant amplitude class-C VCO in 0.18 μm CMOS,” IEEE Microw. Wireless Compon. Lett. vol. 21, no. 8, pp. 427–429, Aug. 2011.

Dorra MELLOULI, Hassene MNIF, Mourad LOULOU "Wide Tuning Band Quadrature veo" National Engineering School of Sfax (ENIS), BP W, 3038 Sfax, Tunisia.

B. Razavi, RF Microelectronics, Prentice Hall, Upper Saddle River NJ, 1998.

J. Crols and M. S. J. Steyaert, “A single-chip 900 MHz CMOS receiver front-end with a high performance low-IF topology,” IEEE J. SolidState Circuits, vol. 30, pp. 1483–1492, Dec. 1995.

H. Matsuoka and T. Tsukahara, “A 5-GHz frequency-doubling quadrature modulator with a ring-type local oscillator,” IEEE J. SolidState Circuits, vol. 34, pp. 1345–1348, Sept. 1999.

Emad Ebrahimi and Sasan Naseh " A CMOS Low-Noise Low-Power Quadrature LC Oscillator" Electrical Engineering Group, Eng. Department, Ferdowsi University of Mashhad Mashhad, Iran.

Shuenn-Yuh Lee, Member, IEEE, and Ching-Yi Chen, “Analysis and Design of a Wide-Tuning-Range VCO With Quadrature Outputs,” IEEE Transactions on circuits and systems—II: Express briefs, VOL. 55, NO. 12, December 2008.

S. Zhihir, F.Tasdemir, T. Dinc, Y. Gurbuz, “A New Resonant Circuit for 2.4 GHz LC VCO with Linear Frequency Tuning,” European Microwave Integrated Circuits Conference (EuMICC 2011), pp. 390- 393, Oct. 2011.

Shefali singh, R.C. Gurjar, “A low power, low phase noise wide tuning LC VCO with Varactor Bank” Proceeding International conference on Recent Innovations is Signal Processing and Embedded Systems (RISE-2017) 27-29 October,2017.

S.Rong and H.C.Luong,“A1V4GHZ-and-10GHz trasformer-based dual-band quadrature VCO in 0.18 m CMOS,” in IEEE CICC 2007, pp. 817–820.

Stephen Docking, "A Method to Derive an Equation for the Oscillation Frequency of a Ring Oscillator "Waterloo, Ontario, Canada, 2002.

H. Saoudiai, M. Dhieba , H. Ghariania, M. Lahiania "Design of 10.6 GHZ low phase noise LC-Voltage controlled oscillator in 0.18ȝm CMOS Technology" 1 18th international conference on Sciences and Techniques of Automatic control & computer engineering - STA'2017, Monastir, Tunisia, December 21-23, 2017.

Anshuman, Dr. V.V.Shete "Tuning Range Optimization of a Voltage Controlled Oscillator".

I.R.Chamasand S.Raman,“AnX-bandsuperharmonicinjectioncoupledquadratureVCO(IC-QVCO)withatunabletailfilterforI/Qphase cancellation,” in Proc. Radio Freq. Integr. Circuits Symp., Jun. 2007, pp. 123–126.

D. Leenaerts, C. Dijkmans, and M. Thompson, “A 0.18 CMOS 2.45GHzlow-powerquadratureVCOwith15%tuningrange,”inProc. Radio Frequency Integrated Circuits Symp., June 2002, pp. 67–70.

J. Savoj and B. Razavi. High-Speed CMOS Circuits for Optical Receivers. Kluwer, 2001.


Refbacks



Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.

ISSN: 2180-1843

eISSN: 2289-8131