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Sensors 2017, 17(2), 223;

A 11 mW 2.4 GHz 0.18 µm CMOS Transceivers for Wireless Sensor Networks

School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China
School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Author to whom correspondence should be addressed.
Academic Editors: Pak Kwong Chan and Holden King-Ho Li
Received: 11 September 2016 / Revised: 23 November 2016 / Accepted: 22 December 2016 / Published: 24 January 2017
(This article belongs to the Special Issue Smart Sensor Interface Circuits and Systems)
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In this paper, a low power transceiver for wireless sensor networks (WSN) is proposed. The system is designed with fully functional blocks including a receiver, a fractional-N frequency synthesizer, and a class-E transmitter, and it is optimized with a good balance among output power, sensitivity, power consumption, and silicon area. A transmitter and receiver (TX-RX) shared input-output matching network is used so that only one off-chip inductor is needed in the system. The power and area efficiency-oriented, fully-integrated frequency synthesizer is able to provide programmable output frequencies in the 2.4 GHz range while occupying a small silicon area. Implemented in a standard 0.18 μm RF Complementary Metal Oxide Semiconductor (CMOS) technology, the whole transceiver occupies a chip area of 0.5 mm2 (1.2 mm2 including bonding pads for a QFN package). Measurement results suggest that the design is able to work at amplitude shift keying (ASK)/on-off-keying (OOK) and FSK modes with up to 500 kbps data rate. With an input sensitivity of −60 dBm and an output power of 3 dBm, the receiver, transmitter and frequency synthesizer consumes 2.3 mW, 4.8 mW, and 3.9 mW from a 1.8 V supply voltage, respectively. View Full-Text
Keywords: wireless sensor networks; RF transceiver; receiver; transmitter; frequency synthesizer; CMOS RF IC wireless sensor networks; RF transceiver; receiver; transmitter; frequency synthesizer; CMOS RF IC

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Hou, B.; Chen, H.; Wang, Z.; Mo, J.; Chen, J.; Yu, F.; Wang, W. A 11 mW 2.4 GHz 0.18 µm CMOS Transceivers for Wireless Sensor Networks. Sensors 2017, 17, 223.

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