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An ultra-low-power RF transceiver for WBANs in medical applications
Zhang, Qi; Kuang, Xiaofei; Wu, Nanjian; Wu, N.(
Source PublicationJournal of Semiconductors
AbstractA2.4 GHz ultra-low-power RF transceiver with a900 MHz auxiliary wake-up link for wireless body area networks(WBANs) in medical applications is presented. The RF transceiver with an asymmetric architecture is proposed to achieve high energy efficiency according to the asymmetric communication in WBANs. The transceiver consists of a main receiver(RX) with an ultra-low-power free-running ring oscillator and a high speed main transmitter(TX) with fast lock-in PLL. A passive wake-up receiver(WuRx) for wake-up function with a high power conversion efficiency(PCE) CMOS rectifier is designed to offer the sensor node the capability of work-on-demand with zero standby power. The chip is implemented in a0.18μm CMOS process. Its core area is1.6 mm2. The main RX achieves a sensitivity of-55 dBm at a100 kbps OOK data rate while consuming just210μA current from the1 V power supply. The main TX achieves+3 dBm output power with a4 Mbps/500 kbps/200 kbps data rate for OOK/4 FSK/2 FSK modulation and dissipates3.25 mA/6.5 mA/6.5 mA current from a1.8 V power supply. The minimum detectable RF input energy for the wake-up RX is-15 dBm and the PCE is more than25%.?2011 Chinese Institute of Electronics.
KeywordCmos Integrated Circuits Conversion Efficiency Energy Efficiency Frequency Shift Keying Medical Applications Sensor Nodes Space Optics Telecommunication Equipment Transceivers Wakes
Subject Area半导体物理
Indexed ByEI
Date Available2012-06-14
Document Type期刊论文
Corresponding AuthorWu, N.(
Recommended Citation
GB/T 7714
Zhang, Qi,Kuang, Xiaofei,Wu, Nanjian,et al. An ultra-low-power RF transceiver for WBANs in medical applications[J]. Journal of Semiconductors,2011,32(6):65008.
APA Zhang, Qi,Kuang, Xiaofei,Wu, Nanjian,&Wu, N..(2011).An ultra-low-power RF transceiver for WBANs in medical applications.Journal of Semiconductors,32(6),65008.
MLA Zhang, Qi,et al."An ultra-low-power RF transceiver for WBANs in medical applications".Journal of Semiconductors 32.6(2011):65008.
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