A SiGe Low Power RF Front-End Receiver for 5.8GHz Wireless Biomedical Application

Authors: Hyunwon Moon

Abstract:

It is necessary to realize new biomedical wireless communication systems which send the signals collected from various bio sensors located at human body in order to monitor our health. Also, it should seamlessly connect to the existing wireless communication systems. A 5.8 GHz ISM band low power RF front-end receiver for a biomedical wireless communication system is implemented using a 0.5 µm SiGe BiCMOS process. To achieve low power RF front-end, the current optimization technique for selecting device size is utilized. The implemented low noise amplifier (LNA) shows a power gain of 9.8 dB, a noise figure (NF) of below 1.75 dB, and an IIP3 of higher than 7.5 dBm while current consumption is only 6 mA at supply voltage of 2.5 V. Also, the performance of a down-conversion mixer is measured as a conversion gain of 11 dB and SSB NF of 10 dB.

Keywords: Biomedical, low noise amplifier, mixer, receiver, RF front-end, SiGe.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1126053

References:

[1] D. L. Kaczman, M. Shah, and N. Godambe et al., “A single-chip triband (2100, 1900, 850/800 MHz) WCDMA/HSDPA cellular transceiver,” IEEE J. Solid-State Circuits, vol. 41, pp. 1122-1132, May 2006.
[2] F. Pengg, D. Barras, M. Kucera, N. Scolar, and A. Vouilloz, “A low power miniaturized 1.95mm2 fully integrated transceiver with fas PLL mode for IEEE 802.15.4/Bluetooth smart and proprietary 2.4GHz applications,” in Proc. IEEE RFIC Symp., pp. 71-74, Jun. 2014.
[3] H. Moon, S. Lee, S.-C. Heo, and H. Yu et al., “A 23mW fully integrated GPS receiver with robust interferer rejection in 65nm CMOS,” IEEE ISSCC Dig. Tech. Papers, pp. 68-69, Feb. 2010.
[4] B. Razavi, RF Microelectronics. New Jersey: Prentice Hall, 1998, ch. 5.
[5] A. Zolfaghari, A. Chan, and B. Razavi, “A 2.4-GHz 34-mW CMOS transceiver for frequency-hopping and direct-sequence applications,” IEEE ISSCC Dig. Tech. Papers, pp. 418-419, Feb. 2001.
[6] O. Shana’a, I. Linscott, and L. Tyler, “Frequency-scalable SiGe bipolar RF front-end design,” IEEE J. Solid-State Circuits, vol. 36, pp. 888-895, Jun. 2001.
[7] D. K. Shaeffer and T. H. Lee., “A 1.5-V, 1.5-GHz CMOS low noise amplifier,” IEEE J. Solid-State Circuits, vol. 32, pp. 745-759, May 1997.
[8] M. T. Terrovitis and R. G. Meyer., “Noise in current-commutating CMOS mixers,” IEEE J. Solid-State Circuits, vol. 34, pp. 772-783, Jun. 1999.
[9] M. T. Terrovitis and R. G. Meyer., “Intermodulation distortion in current-commutating CMOS mixers,” IEEE J. Solid-State Circuits, vol. 35, pp. 1461-1473, Oct. 2000.