Battery Coupling Impact on the Antenna Efficiency in a Small Wearable Device

Andrea Ruaro, Jesper Thaysen, Kaj Bjarne Jakobsen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


Wearable electronics is often challenged by the extremely reduced space available to the antenna design. This study assesses the impact that the coupling to a large battery has on a small antenna for wearable devices. The coupling mechanism and its potential risks for the Electromagnetic Compatibility (EMC) performance are discussed in detail. Once the battery is placed within an electronic device, it is seen that one of the main performance parameters, i.e., the antenna radiation efficiency, may drop up to 1.2 dB depending on the battery size.
Original languageEnglish
Title of host publicationProceedings of 2015 Loughborough Antennas & Propagation Conference
Number of pages4
Publication date2015
Article number7366074
ISBN (Print)978-1-4799-8943-0
Publication statusPublished - 2015
Event2015 Loughborough Antennas & Propagation Conference - Burleigh Court International Conference Centre, Loughborough, United Kingdom
Duration: 2 Nov 20153 Nov 2015


Conference2015 Loughborough Antennas & Propagation Conference
LocationBurleigh Court International Conference Centre
CountryUnited Kingdom


  • Electrically small antennas
  • On-body antennas
  • Wireless body-area networks (WBAN)
  • Body-centric communications
  • Electromagnetic compatibility (EMC)
  • Electromagnetic interference (EMI)
  • Electromagnetic coupling
  • Consumer electronics.

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