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Transformer Tuned VCO for MMW Application

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International Journal of Computer Applications
© 2015 by IJCA Journal
Volume 122 - Number 19
Year of Publication: 2015
Authors:
Sunanda Ambulker
Sangeeta Nakate
10.5120/21807-5126

Sunanda Ambulker and Sangeeta Nakate. Article: Transformer Tuned VCO for MMW Application. International Journal of Computer Applications 122(19):13-16, July 2015. Full text available. BibTeX

@article{key:article,
	author = {Sunanda Ambulker and Sangeeta Nakate},
	title = {Article: Transformer Tuned VCO for MMW Application},
	journal = {International Journal of Computer Applications},
	year = {2015},
	volume = {122},
	number = {19},
	pages = {13-16},
	month = {July},
	note = {Full text available}
}

Abstract

Differential cross coupled voltage controlled oscillator with transformer tuning is presented here for millimeter wave (mmw) application. Here Tuning is done by on chip octagonal transformer which is used as inductive element in LC tank. Proposed scheme provides wide Frequency Tuning Range (FTR) up to 7 GHz of bandwidth and gives low phase noise as compared to inductor based oscillator design. In this method transformer tuned VCO is implemented in UMC 65 nm CMOS Technology which gives FTR from 55 GHz to 62. 4 GHz with phase noise variation -116. 5 to -114. 5dBc/Hz at 10 MHz offset.

References

  • R. Duarte and J. Fernandes, "A Comparative Study on Transformer and Inductor Based LC Tanks for VCOs", International Journal of Microelectronics and Computer Science Vol. 1, No. 1, July 2010, pp. 37-41.
  • D. Leeson, "A simple model of feedback oscillator noise spectrum" in Proc. IEEE, vol. 54, Feb. 1966, pp. 329-330.
  • L. Li et al. , "Design and analysis of a 90 nm mm-wave oscillator using inductive-division LC tank," IEEE J. Solid-State Circuits, vol. 44, no. 7, Jul. 2009, pp. 1950–1958.
  • U. Decanis et al. , "A low-noise quadrature VCO based on magnetically Coupled resonators and a wideband frequency divider at millimeter waves," IEEE J. Solid-State Circuits, vol. 46, no. 12, Dec. 2011, pp. 2943–2954.
  • Z. Liu, E. Skafidas, and R. Evans, "A 70GHz VCO with 8GHz Tuning Range in 0. 13_m CMOS Technology," Proc. The 3rd European Microwave Integrated Circuits Conf. , Oct. 2008.
  • K. Ishibashi, M. Motoyoshi, N. Kobayashi, and M. Fujishima, "76 GHz CMOS voltage-controlled oscillator with 7% frequency tuning range," in Symp. VLSI Circuit Dig. Tech. Papers, Jun. 2007, pp. 176–177.
  • D. Ham and A. Hajimiri, "Concept and methods in optimization of integrated LC VCOs," IEEE Journal of Solid-State Circuits, vol. 36, no. 6, pp. 896-909, June 2001.
  • Wei Fei, Hao Yu,Haipeng Fu,Junyan Ren and Kiat Seng Ye "Design and Analysis of Wide Frequency-Tuning Range 60GHz VCO By Switching Inductor Loaded Transformer", IEEE Transactions on Circuits and Systems-I: Reg. Paper, vol. 61,no 3,March 2014 ,pp. 699-711.
  • S. Rong and H. C. Luong, "Analysis and design of transformer-based dual-band VCO for software-defined radios," IEEE Trans. Circuits Syst. I, Reg. Papers, vol. 59, no. 3, Mar. 2012, pp. 449–462.