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An Ultra-Low-Power Injection Locked Transmitter for Wireless Sensor Networks

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3 Author(s)
Y. H. Chee ; Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA ; A. M. Niknejad ; J. M. Rabaey

This paper presents the principles for designing low-power transmitters for wireless sensor networks. Based on these principles, an injection-locked transmitter is implemented in a standard 0.13-mum CMOS process and packaged using chip-on-board assembly. The transmitter utilizes a film bulk acoustic resonator (FBAR) to obtain a stable carrier at 1.9 GHz. At 0 dBm output power, the transmitter achieves an efficiency of 32% at 50 kb/s and 28% at 156 kb/s. With 50% on-off keying, the transmitter consumes 1.6 and 1.8 mW, respectively

Published in:

IEEE Journal of Solid-State Circuits  (Volume:41 ,  Issue: 8 )
IEEE RFIC Virtual Journal
IEEE RFID Virtual Journal