Impulse radio ultra-wideband (IR-UWB) transmitter for low power low data rate biomedical sensor applications

This paper presents a fully integrated (on-off keying) impulse radio ultra-wideband (IR-UWB) transmitter suitable for low-power wireless biomedical sensors. The transmitter operates at 3-5 GHz frequency range with a channel bandwidth of ~2GHz. Implemented in a standard 130-nm CMOS process the proposed transmitter follows on/-off keying (OOK) modulation scheme and consumes an average power of 496 μW with 1.2 V supply voltage. Simulation results show that the pulse duration is 3.5ns and the peak amplitude of the power spectrum is -46.8 dBm/MHz and which fully complies with the FCC spectral mask.

[1]  Ian Oppermann,et al.  UWB wireless sensor networks: UWEN - a practical example , 2004, IEEE Communications Magazine.

[2]  H.A. Hjortland,et al.  Impulse Radio technology for Biomedical applications , 2007, 2007 IEEE Biomedical Circuits and Systems Conference.

[3]  Jenshan Lin,et al.  Optimal Carrier Frequency of Non-contact Vital Sign Detectors , 2007, 2007 IEEE Radio and Wireless Symposium.

[4]  Zhihua Wang,et al.  A varying pulse width 5th-derivative gaussian pulse generator for UWB transceivers in CMOS , 2008, 2008 IEEE Radio and Wireless Symposium.