A Double-Balanced Quadrature-Input Quadrature-Output Regenerative Frequency Divider for UWB Synthesizer Applications

This paper presents the design and analysis of a proposed double-balanced quadrature-input quadrature-output (QIQO) regenerative divider for ultra-wideband (UWB) synthesizer applications. By fully utilizing the quadrature phase outputs already existed in a quadrature voltage-controlled oscillator (QVCO) or any other quadrature signal generator (QSG), the proposed QIQO divider provides a mechanism to achieve an output IQ phase sequence that is inherently tracked with the input IQ phase sequence. Moreover, compared with conventional dividers, the QIQO divider provides not only smaller and better-matched input loading to the QSG but also improved quadrature phase accuracy, wider operation range, smaller third harmonics, and lower power consumption. Fabricated in a 0.18-mum CMOS process, the QIQO divider measures an image rejection of -62dBc with a frequency operation range of larger than 18.4% from 8.6 GHz to 10.34 GHz while consuming 7.2 mW at 0.9-V supply.

[1]  Jri Lee,et al.  A 40-GHz frequency divider in 0.18-/spl mu/m CMOS technology , 2004, 2003 Symposium on VLSI Circuits. Digest of Technical Papers (IEEE Cat. No.03CH37408).

[2]  A.W.L. Ng,et al.  A 1V 17GHz 5mW Quandrature CMOS VCO based on transformer coupling , 2006, 2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers.

[3]  Luca Selmi,et al.  A Design Methodology for MOS Current-Mode Logic Frequency Dividers , 2007, IEEE Transactions on Circuits and Systems I: Regular Papers.

[4]  Behzad Razavi,et al.  RF Microelectronics , 1997 .

[5]  A.W.L. Ng,et al.  A 1-V 17-GHz 5-mW CMOS Quadrature VCO Based on Transformer Coupling , 2007, IEEE Journal of Solid-State Circuits.

[6]  Andrea Mazzanti,et al.  A 1.8-GHz injection-locked quadrature CMOS VCO with low phase noise and high phase accuracy , 2006, IEEE Transactions on Circuits and Systems I: Regular Papers.

[7]  Luca Larcher,et al.  Balanced CMOS LC-tank analog frequency dividers for quadrature LO generation , 2005, Proceedings of the IEEE 2005 Custom Integrated Circuits Conference, 2005..

[8]  T. Kuroda,et al.  A 20-GHz Injection-Locked LC Divider with a 25-% Locking Range , 2006, 2006 Symposium on VLSI Circuits, 2006. Digest of Technical Papers..

[9]  Howard C. Luong,et al.  A 1.5-V CMOS Receiver Front-End for 9-Band MB-OFDM UWB System , 2006, IEEE Custom Integrated Circuits Conference 2006.

[10]  A. Bonfanti,et al.  Analysis and design of a 1.8-GHz CMOS LC quadrature VCO , 2002, IEEE J. Solid State Circuits.

[11]  Howard C. Luong,et al.  A 0.9-V Double-Balanced Quadrature-Input Quadrature-Output Frequency Divider , 2006, IEEE Custom Integrated Circuits Conference 2006.

[12]  R.L. Miller Fractional-Frequency Generators Utilizing Regenerative Modulation , 1939, Proceedings of the IRE.

[13]  Kaushik Sengupta,et al.  A Nonlinear Transient Analysis of Regenerative Frequency Dividers , 2007, IEEE Transactions on Circuits and Systems I: Regular Papers.

[14]  Mohammed Ismail,et al.  A 10-GHz CMOS quadrature LC-VCO for multirate optical applications , 2003 .

[15]  A. Ismail,et al.  A 3.1 to 8.2 GHz direct conversion receiver for MB-OFDM UWB communications , 2005, ISSCC. 2005 IEEE International Digest of Technical Papers. Solid-State Circuits Conference, 2005..

[16]  F. Svelto,et al.  Analysis and design of injection-locked LC dividers for quadrature generation , 2004, IEEE Journal of Solid-State Circuits.