Related Experiment Videos
A 380pW Dual Mode Optical Wake-up Receiver with Ambient Noise Cancellation
Wootaek Lim1, Taekwang Jang1, Inhee Lee1
1University of Michigan, Ann Arbor, MI, USA, imhotep@umich.edu.
Symposium on VLSI Circuits : [Proceedings]. Symposium on VLSI Circuits
|April 11, 2017
Summary
This study introduces an optical wake-up receiver for wireless sensors, achieving sub-nanowatt power consumption. It offers dual modes for ultra-low standby power and high data rates, enhancing sensor node efficiency.
Area of Science:
- Electrical Engineering
- Computer Engineering
- Photonics
Background:
- Wireless sensor nodes require energy-efficient communication solutions.
- Existing wake-up receivers often struggle with balancing low power consumption and high data rates.
- Ambient noise interference can degrade receiver performance.
Purpose of the Study:
- To develop a sub-nanowatt optical wake-up receiver for wireless sensor nodes.
- To enable dual-mode operation for ultra-low standby power and high data rates.
- To implement ambient in-band noise cancellation.
Main Methods:
- Design and fabrication of an optical wake-up receiver in 0.18µm CMOS technology.
- Implementation of a dual-mode operational scheme.
- Integration of noise-cancellation circuitry.
Main Results:
- Achieved sub-nanowatt (sub-nW) optical wake-up receiver.
- Demonstrated 380 picowatts (pW) power consumption in always-on wake-up mode.
- Demonstrated 28.1 microwatts (µW) power consumption in fast receive (RX) mode at 250 kilobits per second (kbps).
Conclusions:
- The developed optical wake-up receiver meets the stringent power requirements for wireless sensor nodes.
- The dual-mode functionality provides flexibility for different operational needs.
- Effective noise cancellation ensures reliable communication performance.