A 46% Efficient 0.8dBm Transmitter for Wireless Sensor Networks

@article{Chee2006A4E,
  title={A 46% Efficient 0.8dBm Transmitter for Wireless Sensor Networks},
  author={Y. H. Chee and A. M. Niknejad and J. M. Rabaey},
  journal={2006 Symposium on VLSI Circuits, 2006. Digest of Technical Papers.},
  year={2006},
  pages={43-44}
}
This paper presents a 1.9GHz low power transmitter for wireless sensor networks. It uses film bulk acoustic resonators (FBAR) for RF carrier generation and is co-designed with the antenna. The two-channel transmitter is 46% efficient when radiating 1.2mW from a 650mV supply. With 50% on-off keying, it consumes 1.35mW and supports data rate up till 330kbps. The 1.2times0.8mm2 transmitter is implemented in 0.13mum CMOS and is integrated into a 38times25times8.5mm3 solar powered sensor node 
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