An Ultralow-Power Receiver for Wireless Sensor Networks

An ultralow-power super-regenerative receiver for BFSK modulated signals has been designed and fabricated in a standard 0.18-μm CMOS process. The use of BFSK modulation allows the receiver to operate at higher data rates and also gives an approximate 3-dB SNR performance increase over the more tradi...

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Bibliographic Details
Published in:IEEE journal of solid-state circuits 2010-09, Vol.45 (9), p.1759-1769
Main Authors: Ayers, James, Mayaram, Kartikeya, Fiez, Terri S
Format: Article
Language:English
Subjects:
Applied sciences
Approximation
Binary frequency-shift keying
Calibration
Circuit properties
CMOS
Design. Technologies. Operation analysis. Testing
Digital circuits
digitally-controlled oscillator
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Energy consumption
Exact sciences and technology
Impedance matching
Inductors
Integrated circuits
low power
low voltage
Magnetic devices
Modulation
Networks
Oscillators
Oscillators, resonators, synthetizers
Power consumption
Receivers
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Sensors
super-regenerative receiver
Varactors
Wireless sensor networks
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Summary:An ultralow-power super-regenerative receiver for BFSK modulated signals has been designed and fabricated in a standard 0.18-μm CMOS process. The use of BFSK modulation allows the receiver to operate at higher data rates and also gives an approximate 3-dB SNR performance increase over the more traditional OOK modulation. A fast calibration scheme and the absence of an external inductor make it ideal for ultralow-power sensor networks. A power consumption of 215 μW from a 0.65-V supply and an area of 0.55 mm 2 make it ideal for highly integrated energy harvesting sensor nodes. At 2 Mb/s, the receiver consumes 0.18 nJ/b, making it the lowest energy integrated super-regenerative receiver to date.
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2010.2056850