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Low Phase Noise VCO Using Novel Harmonic Control Circuit Based on Composite Right/Left-Handed Transmission Line  

Choi, Jae-Won (Information and Telecommunication Engineering, Soongsil University)
Seo, Chul-Hun (Information and Telecommunication Engineering, Soongsil University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.47, no.1, 2010 , pp. 84-90 More about this Journal
Abstract
In this paper, a novel voltage-controlled oscillator (VCO) using the harmonic control circuit based on the composite right/left-handed (CRLH) transmission lines (TLs) is presented to reduce the phase noise without the reduction of the frequency tuning range and miniaturize the circuit size. The phase noise is reduced by the novel harmonic control circuit having the short impedances for the second- and third-harmonic components. The proposed harmonic control circuit is designed by using the CRLH TLs with the dual-band characteristic by the frequency offset and phase slope of the CRLH TLs. The high-Q resonator has been used to reduce the phase noise, but has the problem of the frequency tuning range reduction. However, the frequency tuning range of the proposed VCO has not been reduced because the phase noise has been reduced without the high-Q resonator. The miniaturization of the circuit size is achieved by using the CRLH TLs instead of the conventional right-handed (RH) TLs. The phase noise of VCO is -119.17 ~ -117.50 dBc/Hz at 100 kHz in the tuning range of 5.731 ~ 5.938 GHz.
Keywords
VCO; Phase Noise; Frequency Tuning Range; Miniaturization; Novel Harmonic Control Circuit; CRLH TLs;
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1 J. Choi, and C. Seo, "Broadband VCO using electronically controlled metamaterial transmission line based on varactor-loaded split-ring resonator," Microwave and Optical Technology Letters, vol. 50, no. 4, pp. 1078-1082, April 2008.   DOI   ScienceOn
2 J. Choi, and C. Seo, "Microstrip square open loop multiple split ring resonator for low phase noise VCO," IEEE Transactions on Microwave Theory and Techniques, vol. 56, no. 12, pp. 3245-3252, December 2008.
3 J. Choi, and C. Seo, "Low phase noise VCO using output matching network based on novel harmonic control circuit," Microwave and Optical Technology Letters, vol. 51, no. 8, pp. 1838-1842, August 2009.   DOI   ScienceOn
4 H. Kim, S. Ryu, Y. Chung, J. Choi, and B. Kim, "A low phase-noise CMOS VCO with harmonic tuned LC Tank," IEEE Transactions on Microwave Theory and Techniques, vol. 54, no. 7, pp.2917-2924, July 2006.   DOI
5 A. Hajimiri and T. H. Lee, "A general theory of phase noise in electrical oscillators," IEEE Journal of Solid-State Circuits, vol. 33, no. 2,pp. 179-194, February 1998.   DOI   ScienceOn
6 A. Wagemans, "A 3.5 mW 2.5 GHz diversity receiver and a 1.2 mW 3.6 GHz VCO in siliconon- anything," IEEE International Solid-State Circuits Conference, pp. 250-251, February 1998.
7 A. Lai, C. Caloz, and T. Itoh, "Composite right/ left-handed transmission line metamaterials," IEEE Microwave Magazine, vol. 5, no. 3, pp. 34-50, September 2004.   DOI   ScienceOn