TY - GEN
T1 - Internet-of-Things Sensors Wirelessly Powered by Electrically Small Huygens Dipole Rectenna
AU - Lin, Wei
AU - Ziolkowski, Richard W.
N1 - Publisher Copyright:
© 2019 Antenna Branch of Chinese Institute of Electronics.
PY - 2019/10
Y1 - 2019/10
N2 - Internet-of-Things (IoT) sensors are expected to be ubiquitous in a future smart and sustainable society. Due to the exponential growth of device numbers, powering IoT devices by far field wireless power transfer (WPT) is becoming a necessary trend. This paper introduces two IoT sensors (light and temperature) that are wirelessly powered by a highly compact and efficient electrically small Huygens dipole rectenna. The entire system seamlessly integrates two subsystems. One is the metamaterial-inspired electrically small Huygens antenna that organically combines capacitively loaded loop (CLL) and Egyptian axe dipole (EAD) radiators together. The other is the sensor-augmented rectifier in which the output DC voltage varies as a function of the sensor impedance. The developed wirelessly powered systems can sense light or temperature levels and, when attached to an alarm, can send a warning signal if a threshold value is exceeded. Their prototypes were fabricated and tested. The measured results agree very well with their simulated values. The prototypes are highly compact and electrically small (ka = 0.73). They represent ideal candidates for many emerging IoT wireless sensor applications.
AB - Internet-of-Things (IoT) sensors are expected to be ubiquitous in a future smart and sustainable society. Due to the exponential growth of device numbers, powering IoT devices by far field wireless power transfer (WPT) is becoming a necessary trend. This paper introduces two IoT sensors (light and temperature) that are wirelessly powered by a highly compact and efficient electrically small Huygens dipole rectenna. The entire system seamlessly integrates two subsystems. One is the metamaterial-inspired electrically small Huygens antenna that organically combines capacitively loaded loop (CLL) and Egyptian axe dipole (EAD) radiators together. The other is the sensor-augmented rectifier in which the output DC voltage varies as a function of the sensor impedance. The developed wirelessly powered systems can sense light or temperature levels and, when attached to an alarm, can send a warning signal if a threshold value is exceeded. Their prototypes were fabricated and tested. The measured results agree very well with their simulated values. The prototypes are highly compact and electrically small (ka = 0.73). They represent ideal candidates for many emerging IoT wireless sensor applications.
UR - http://www.scopus.com/inward/record.url?scp=85079013059&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85079013059&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85079013059
T3 - 2019 International Symposium on Antennas and Propagation, ISAP 2019 - Proceedings
BT - 2019 International Symposium on Antennas and Propagation, ISAP 2019 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 International Symposium on Antennas and Propagation, ISAP 2019
Y2 - 27 October 2019 through 30 October 2019
ER -