A Highly Linear CMOS Baseband Chain for Wideband Wireless Applications

ETRI Journal

关键词: feed-forward compensation;    active RC filter;    VGA;    Baseband chain;   

Others  :  1185090
DOI  :  10.4218/etrij.04.0104.0022

【 摘 要 】

The emergence of wide channel bandwidth wireless standards requires the use of a highly linear, wideband integrated CMOS baseband chain with moderate power consumption. In this paper, we present the design of highly linear, wideband active RC filters and a digitally programmable variable gain amplifier. To achieve a high unity gain bandwidth product with moderate power consumption, the feed-forward compensation technique is applied for the design of wideband active RC filters. Measured results from a 0.5 μm CMOS prototype baseband chain show a cutoff frequency of 10 MHz, a variable gain range of 33 dB, an in-band IIP3 of 13 dBV, and an input referred noise of 114 μVrms while dissipating 20 mW from a 3 V supply.

   

【 参考文献 】

• [1]B. Razavi, Design of Analog CMOS Integrated Circuits, McGraw-Hill, New York, 2001.
• [2]S.B. Hyun, G.Y. Tak, S.H. Kim, B.J. Kim, J. Ko, and S.S. Park, "A Dual-Mode 2.4-GHz CMOS Transceiver for High-Rate Bluetooth Systems," ETRI J., vol. 26, no. 3, June 2004, pp. 229-240.
• [3]D.A. Johns and K. Martin, Analog Integrated Circuit Design, John Wiley & Sons, New York, 1997.
• [4]B.K. Thandri and J. Silva-Martinez, and F. Maloberti, "A feedforward compensation scheme for high gain wideband amplifiers," Proc. IEEE Int’l Conf. on Electronics, Circuits and Systems, Malta, Feb. 2001, pp. 1115-1118.
• [5]B.K. Thandri and J. Silva-Martinez, "A Robust Feedforward Compensation Scheme for Multistage Operational Transconductance Amplifiers with No Miller Capacitors," IEEE J. of Solid-State Circuits, vol. 38, no. 2, Feb. 2003, pp. 237-243.
• [6]R. Schaumann, M.S. Ghausi, and K.R. Laker, Design of Analog Filters, Prentice-Hall, Englewood Cliffs, NJ, 1990.
• [7]K. Kolo and K. Halonen, CMOS Current Amplifiers, Kluwer Academic Publishers, Boston, 2002.
• [8]B. Stefanelli and A. Kaiser, "CMOS Triode Transconductor with High Dynamic Range," Electronics Lett., vol. 26, no. 13, June 1990, pp. 880-881.
• [9]J. Jussila, J. Ryynanen, K. Kivekas, L. Sumanen, A. Parssinen, and K. Halonen, "A 22 mA 3.7 dB NF Direct Conversion Receiver for 3 G WCDMA," Proc. IEEE Int’l Solid-State Circuits Conf. Digest of Technical Papers, Feb. 2001, pp. 264-285.
• [10]B. Razavi, "A 2.4-GHz CMOS Receiver for IEEE 802.11 Wireless LAN’s," IEEE J. of Solid State Circuits, vol. 34, no. 10, Oct. 1999, pp. 1382-1385.