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.

BFSK, Integrated, Loop antenna, Medical sensor readout, Self powered circuit, Transmitter
2007 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2007
Department of Electronics

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