Internet-of-Things Sensors Wirelessly Powered by Electrically Small Huygens Dipole Rectenna

Wei Lin, Richard W. Ziolkowski

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publication2019 International Symposium on Antennas and Propagation, ISAP 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9787900914040
StatePublished - Oct 2019
Externally publishedYes
Event2019 International Symposium on Antennas and Propagation, ISAP 2019 - Xi�an, China
Duration: Oct 27 2019Oct 30 2019

Publication series

Name2019 International Symposium on Antennas and Propagation, ISAP 2019 - Proceedings

Conference

Conference2019 International Symposium on Antennas and Propagation, ISAP 2019
Country/TerritoryChina
CityXi�an
Period10/27/1910/30/19

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Instrumentation

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