Thermographic Investigation of Frequency-Reconfigurable Wearable Antennas

Quoc Hung Dang, Shengjian Jammy Chen, Christophe Fumeaux

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

The thermal behavior of a frequency-reconfigurable wearable textile antenna is investigated in this paper through in-frared thermography. The relationship between the temperature of the textile antenna and the input power is experimentally considered to identify the antenna hot spots. It is found that, the highest temperature point is mainly at the tuning component location, which is consistent with the loss predictions from electromagnetic simulation tools. A clear correlation is confirmed between the radiation efficiency and temperature of the varactors used as tuning elements. It is also observed that tuning frequency remains stable despite the antenna input power variations within the range from 21 to 521 mW. The presented preliminary results demonstrate the use of infrared thermography as a valuable tool for characterization of thermal safety margins of wearable devices and for imaging of losses in reconfigurable antenna technology.

Original languageEnglish
Title of host publication2022 16th European Conference on Antennas and Propagation (EuCAP)
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)9788831299046, 9781665416047
DOIs
Publication statusPublished - 2022
Event16th European Conference on Antennas and Propagation, EuCAP 2022 - Madrid, Spain
Duration: 27 Mar 20221 Apr 2022

Conference

Conference16th European Conference on Antennas and Propagation, EuCAP 2022
Country/TerritorySpain
CityMadrid
Period27/03/221/04/22

Keywords

  • Frequency-reconfigurable antennas
  • textile an-tennas
  • thermography
  • wearable antennas

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