Open Access Open Access  Restricted Access Subscription or Fee Access

Design and Optimization of Multi-Band 3.1-4.8GHz VCO for UWB Communication System

D. Ben Issa, M. Samet, A. Kachouri

Abstract


A multi-bands voltage controlled oscillator (VCO) based on LC resonator circuit is presented in this work. Two methods of optimization are applied to multi-band VCO circuit in order to confirm and to compare their results. These optimization techniques are the geometric program (GP) and graphical method. Theory results of each optimization method agree on the optimum component size of the multi-band VCO circuit. The operation range of the VCO is extended to cover eight frequency bands from 3.1GHz to 4.8GHz of which the tuning range is 42.5%. The phase noise is -118dBc/Hz, -123dBc/Hz and -123dBc/Hz at 1 MHz offset frequency from carrier frequency of 3.432GHz, 3.96GHz and 4.488GHz, respectively. The power consumption of multi-band VCO is 18mW from a 2.5V supply voltage. Simulated results show the performances of these methods, in fact, low phase noise and low power are obtained with the optimum components size of achieved result of optimization methods.


Keywords


VCO, Phase Noise, Geometric Program, Graphical Optimization Method

Full Text:

PDF

References


S.Yong, C. Chongand G. Kolumba, “Non-coherent UWB Radio for Low-rate WPAN Applications: A Chaotic Approach”, International Journal of Wireless Information Networks, 2007,Vol. 14, No. 2, pp.121-131.

J. Bergervoet and all, “An Interference Robust Receive Chain for UWB Radio in SiGe BiCMOS”, IEEE International Solid-State Circuits Conference, 2005, pp.200-201.

D. Leenaerts and all, “A SiGe BiCMOS 1ns Fast Hopping Frequency Synthesizer for UWB Radio” IEEE International Solid-State Circuits Conference, 2005, pp.200-201.

G. Tak, S. Hyon, T. Kang, B. Choi and S. Park, “A 6.3-9-GHz CMOS Fast settling PLL for MB-OFDM UWB applications” IEEE Journal of Solid-State Circuits, 2005, Vol.40, N°8, pp.1671-1679.

S. Min Oh, C. Kim and S. Lee, "A 74%, 1.56-2.71 GHz, Wide-Tunable LC-Tuned VCO in 0.35µm CMOS Technology", Microwave and Optical Technology Letters, 2003, vol. 37, n°2, pp.98-100.

B. Gassara, M. Abdellaoui, and N. Masmoudi “Multi Band Frequency Synthesizer Based on ISPD PLL with Adapted LC Tuned VCO” IJECS 2007, vol.1 N° 3, pp.150-157.

R. L. Bunch and S. Raman, “Large-Signal Analysis of MOS Varactors in CMOS -Gm LC VCOs,” IEEE J.Solid-States Circuits, 2003, vol. 38, pp. 1325-1332.

M.Hershenson, A.Hajimri, S.Mohan, S.Boyd and T.H.Lee, “Design and optimization of LC oscillators”, IEEE, 1999.

D. Ben Issa, A. Kachouri et M. Samet, "Concepts and Optimization of CMOS VCO circuit via Geometric Program", DTIS, Tozeur,Tunisia, 2008.

D. Ham and A.Hajimri, “Concepts and Methods in Optimization of Integrated LC VCOs”, IEEE journal of solid-State Circuits, 2001, vol 36, n°6, pp. 896-909.

M. Su, C. Wu and K. Hsu, “Phase noise analysis of an integrated voltage controlled oscillator with a novel graphical optimisation method”, IEEE Communications Magazine, 2002, pp.166-170.

M. Prochaske, K.Bohle and W.Mathis, “A design approach for integrated CMOS LC-tank oscillators using bifurcation analysis”, Advances in Radio Science, 2006, pp.143-148,.

A. Kachouri, D. Ben Issa, N. Boughanmi & M. SAMET, “A New Temperature Compensation Method for a 2.5 GHz Integrated VCO” IJCSNS International Journal of Computer Science and Network Security, 2007, vol.7, N°.5, pp.78-84.

D. Ben Issa, A. Kachouri et M. Samet, " Conception de QVCOs adaptés aux applications multi-standards", JNRDM, Bordeaux, France, 2008.

Ch. Sauer, M.Stanacevic, G. Cauwenberghs, and N.Thakor, “Power Harvesting and Telemetry in CMOS for Implanted Devices”, IEEE Tran. Cir and Sys, 2005, Vol. 52, NO. 12, pp. 2605-2613.

T. Wang, H.C. Chen, H.W. Chiu, Y.S. Lin, G. Huang and S.S. Lu, “GPCADENCE: A tool for CMOS opamp Synthesis”, IEEE /ACM ICCADENCE, 1998, pp.296-303,.

T. Wang, H.C. Chen, H.W. Chiu, Y.S. Lin, G. Huang and S.S. Lu, “Micromachined CMOS LNA and VCO By CMOS -Compatible ICP Deep Trench Technology”, IEEE Transactions on Microwave Theory and Techniques, 2006, vol.54, n°2, pp.580-588.

T. Wang, H.C. Chen, H.W. Chiu, Y.S. Lin, G. Huang and S.S. Lu, “Micromachined CMOS LNA and VCO By CMOS -Compatible ICP Deep Trench Technology”, IEEE Transactions on Microwave Theory and Techniques, vol.54, n°2, pp.580-588, February 2006.


Refbacks

  • There are currently no refbacks.


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