This paper presents a completely integrated, low-power 6.3 GHz oscillator transmitter which includes an on-chip antenna suitable for short-range medical sensor applications. The transmitter, implemented in a 1.2 V 0.13 μm CMOS process, utilizes open-loop direct VCO modulation for BFSK data at a rate of 300 kbps. For communicating a 1 kbit packet once per second, an average power consumption of 14 μW is achieved. During a packet transmission, the power consumption of the transmitter is 4.25 mW, enabling a self-powered design using integrated ultracapacitors for an SoC solution. With a radiated power of 0 dBm, the transmitter has a communication range of 2 m.

Additional Metadata
Keywords BFSK, Integrated, Loop antenna, Medical sensor readout, Self powered circuit, Transmitter
Persistent URL dx.doi.org/10.1109/RFIC.2007.380842
Conference 2007 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2007
Citation
Karam, V. (Victor), Popplewell, P.H.R. (Peter H. R.), Shamitn, A. (Atif), Rogers, J, & Plett, C. (2007). A 6.3 GHz BFSK transmitter with on-chip antenna for self-powered medical sensor applications. Presented at the 2007 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2007. doi:10.1109/RFIC.2007.380842