A 0.084 nJ/b FSK transmitter and 4.8 μW OOK receiver for ISM-band medical sensor networks

This paper concerns a high performance transmitter (Tx) and an ultra low-power receiver (Rx) dedicated to medical implant communications operating at Industrial, Scientific and Medical (ISM) frequency band. Tx benefits from a new efficient Frequency-Shift Keying (FSK) modulation technique which provides more than 20 Mb/s of data-rate and consumes only 0.084 nJ/b validated through post-layout simulations using 1.2 V supply. The On-Off Keying (OOK) Rx consists of a noncoherent detection design based on envelope detector scheme. The proposed receiver was simulated with modulation index ranging from 60 to 100%. Data-rate of 2 Mb/s was achieved while consuming 4.8 μW from a 0.9 V supply. The proposed circuits are implemented in 90 nm CMOS technology.

[1]  Yang Xu,et al.  A 228 $\mu$ W 750 MHz BPSK Demodulator Based on Injection Locking , 2011, IEEE Journal of Solid-State Circuits.

[2]  Mohamad Sawan,et al.  An ultra-low power ISM-band integer-N frequency synthesizer dedicated to implantable medical microsystems , 2009 .

[3]  Anantha Chandrakasan,et al.  A 350μW CMOS MSK transmitter and 400μW OOK super-regenerative receiver for Medical Implant Communications , 2009, 2008 IEEE Symposium on VLSI Circuits.

[4]  R. van Langevelde,et al.  An ultra-low-power 868/915 MHz RF transceiver for wireless sensor network applications , 2009, 2009 IEEE Radio Frequency Integrated Circuits Symposium.

[5]  Ling Tang,et al.  An ultra low power ASK demodulator for passive UHF RFID tag , 2011, 2011 9th IEEE International Conference on ASIC.

[6]  David J. Comer,et al.  Operation of analog MOS circuits in the weak or moderate inversion region , 2004, IEEE Transactions on Education.

[7]  Chua-Chin Wang,et al.  All-MOS ASK Demodulator for Low-Frequency Applications , 2008, IEEE Transactions on Circuits and Systems II: Express Briefs.

[8]  Mohamad Sawan,et al.  A new FSK-based transmitter dedicated for low-power wireless medical transceivers , 2011, 2011 24th Canadian Conference on Electrical and Computer Engineering(CCECE).

[9]  Sudipto Chakraborty,et al.  A 2mW CMOS MICS-band BFSK transceiver with reconfigurable antenna interface , 2010, 2010 IEEE Radio Frequency Integrated Circuits Symposium.

[10]  Pui-In Mak,et al.  Transceiver architecture selection: Review, state-of-the-art survey and case study , 2007, IEEE Circuits and Systems Magazine.

[11]  Chun-Huat Heng,et al.  A 17pJ/bit 915MHz 8PSK/O-QPSK transmitter for high data rate biomedical applications , 2012, Proceedings of the IEEE 2012 Custom Integrated Circuits Conference.

[12]  M. Sawan,et al.  A 20 Mb/s 0.084 nJ/bit ISM-band transmitter dedicated to medical sensor networks , 2012, 2012 19th IEEE International Conference on Electronics, Circuits, and Systems (ICECS 2012).

[13]  Qi Zhang,et al.  Ultra-low-power RF transceivers for WBANs in medical applications , 2012, 10th IEEE International NEWCAS Conference.

[14]  Giuseppe Palmisano,et al.  A 90nm CMOS 5Mb/s crystal-less RF transceiver for RF-powered WSN nodes , 2012, 2012 IEEE International Solid-State Circuits Conference.

[15]  Hoi-Jun Yoo,et al.  A low energy injection-locked FSK transceiver with frequency-to-amplitude conversion for body sensor applications , 2010, 2010 Symposium on VLSI Circuits.