A Low Voltage High Linearity CMOS Gilbert Cell Using Charge Injection Method

Authors: Raheleh Hedayati, Sanaz Haddadian, Hooman Nabovati

Abstract:

A 2.4GHz (RF) down conversion Gilbert Cell mixer, implemented in a 0.18-μm CMOS technology with a 1.8V supply, is presented. Current bleeding (charge injection) technique has been used to increase the conversion gain and the linearity of the mixer. The proposed mixer provides 10.75 dB conversion gain ( C G ) with 14.3mw total power consumption. The IIP3 and 1-dB compression point of the mixer are 8dbm and -4.6dbm respectively, at 300 MHz IF frequencies. Comparing the current design against the conventional mixer design, demonstrates better performance in the conversion gain, linearity, noise figure and port-to-port isolation.

Keywords: Mixer, Gilbert Cell, Charge Injection, RFIC, CMOSTechnology.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1330117

References:

[1] V. Chandra, "A 2.5V High Linearity CMOS Mixer for 1.9GHz Applications", Carnegie Melon University, 2002.
[2] B. Leung, "VLSI for Wireless Communication", Prentice Hall, 2003.
[3] B. Pham, "A 1.9GHz Gilbert Cell Mixer in 0.18╬╝ CMOS for a Cable Tuner", Carleton University, 2001.
[4] S. Rose, "A CMOS sub-harmonic mixer for WCDMA", MS Thesis, University of California, Berkeley, March 2002.
[5] H. L. Krauss, C.W. Bostian, "Solid State Radio Engineering", John Willey & Sons, 1980.
[6] T. H. Lee, "The design of CMOS Radio-Frequency Integrated Circuit", Cambridge University Press, 1998.
[7] B. Razavi, "RF Microelectronics", Prentice Hall, 1998.
[8] A. A. Abidi, "Direct-conversion radio transceivers for digital communications," IEEE Journal of Solid-State Circuits, Vol. 30, pp. 1399-1410, Dec. 1995.
[9] L. A. NacEachern and T. Manku, "A charge-injection method for Gilbert cell biasing ," IEEE Canadian Conference on Electrical and Computer Engineering, vol. 1, pp. 365-368, May 1998.
[10] J.H. Tsai, P.S. Wu, C.S. Lin, T.W. Huang, J.G.J. Chem, W.C. Huang, "A 25-75 GHz Broadband Gilbert-Cell Mixer Using 90-nm CMOS technology", IEEE Microwave and Wireless Components Letters, Vol. 17, No. 4, pp. 247-249, April 2007.
[11] C. S. Lin, P. S.Wu, H. Y. Chang, and H. Wang, "A 9-50-GHz Gilbert cell down-conversion mixer in 0.13╬╝m CMOS technology," IEEE Microwave and Wireless Components Letter, Vol. 16, No. 5, pp. 293- 295, May 2006.
[12] S. G. Lee and J. K. Choi, "Current-reuse bleeding mixer", IEEE Electronics Letters, vol. 36, no. 8, pp. 696-697, Apr.2000.
[13] C.C. Tang, C.H. WU, W.S. Feng, S.I. Liu, "A 2.4GHz Low Voltage CMOD Down-Conversion Double-Balanced Mixer", Proc. IEICE Trans, Electron, vol.E84-c, No. 8, pp.1084-1091, 2001.