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Sang-Gug Lee

2-4-2 Project Director

Project : Ultra low power wake-up radio development
Purpose This technology for maximizing the battery life time of wireless sensor node is key issues in implementing an ultra low power sensor node which can be possible the real time and energy efficient data transmission by turning-off the most hardware of transceiver and then waking it up by using wake-up signal only when is needed. We develop the plug-in type MAC based ultra reactive wake-up radio which can be applied to the various wireless sensor networks.
Contents This project is composed of 4 phases. In the 1st year, 2.4GHz Modem on chip multi-channel ULP radio receiver IC technologies for wake-up are studied. In the 2nd year, ULP radio module is developed. In the 3rd year, research target is to develop Sub-GHz wake-up radio for long-range communication. In the 4th year, the two radios are merged into a dual-band radio module. The detailed contents of each phase are as follows.
Wake-up radio receiver development is started with the design of simple, low power receiver architecture, run parallel with wake-up algorithm. Since there is no MAC protocol for multiple communication using wake-up receiver, development of wake-up receiver based MAC algorithm and the appropriate receiver architecture will construct power-efficient sensor network. The implementation of wake-up receiver architecture will be achieved.
Based on the research of 2.4GHz radio, Sub-GHz radio for long-range communication is developed. the receiver implemented in the 1st year and Sub-GHz radio architecture are merged into a dual-band radio module which can be used both short range and long range.
Expected Contribution When the project carried succesfully, it will be used in application to sensor node transceiver for Zigbee, WPAN, WBAN standard. We will obtain the technology competition for sensor node battery life time by reducing transceiver the power consumption extremely with developed reactive wake-up radio.
Publication
No Title Year Phase
5 Spur Reduction Techniques With a Switched-Capacitor Feedback Differential PLL and a DLL-Based SSCG in UHF RFID Transmitter 2015.04. Phase 2
2nd year
4 A 2.2 mW, 40 dB Automatic Gain Controllable Low Noise Amplifier for FM Receiver 2015.02. Phase 2
2nd year
3 A 5.8GHz DSRC Transceiver With a 10uA Interference-Aware Wake-Up Receiver for the Chinese ETCS 2014.10. Phase 2
2nd year
2 A Fast and Precise Blind I/Q Mismatch Compensation for Image Rejection in Direct-Conversion Receiver 2014.02. Phase 2
1st year
1 0.7-2.7 GHz wideband CMOS low-noise amplifier for LTE application 2013.11. Phase 2
1st year
1
Patent
No Title Country Date Phase
2 웨이크업 신호를 이용한 통신 시스템 및 상기 통신 시스템의 운용방법 KR 2014-12-04 Phase 2
2nd year
1 웨이크업 신호를 이용한 단말 장치 및 송수신기 활성화 방법 KR 2014-12-04 Phase 2
2nd year
1
Conference
No title Conference Name Date Phase
1 A Low Power Low Inaccuracy Linearity-Compensated Temperature Sensor for Attachable Medical Devices 2013 IEEE International Symposium on Circuits and Systems (ISCAS, 2013) 2013-05-19 Phase 1
2nd year
1
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