Design of PIFA with Metamaterials for Body-SAR Reduction in Wearable Applications

Sang Il Kwak, Dong Uk Sim, Jong Hwa Kwon, Young Joong Yoon

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

This letter proposes a planar inverted-F antenna (PIFA) with an artificial magnetic conductor (AMC) structure for body specific absorption rate (SAR) reduction in a wideband-code-division-multiple-access band. As wireless devices such as wearable phones and smart watches become more common, health risks originating from electromagnetic waves generated by devices worn on the body have become an important issue. AMC structures are a type of metamaterial that can act as a perfect magnetic conductor and control the radiation pattern of an antenna. Thus, an antenna with an AMC structure is capable of preventing hazardous electromagnetic fields being emitted in the direction of the body. The S-parameters, radiation patterns, total radiated power values, and SAR values of such a designed structure are presented. The results demonstrate a 43.3% reduction in the SAR value at the center frequency. Thus, the human body can be protected from electromagnetic waves using metamaterials.

Original languageEnglish
Article number7530861
Pages (from-to)297-300
Number of pages4
JournalIEEE Transactions on Electromagnetic Compatibility
Volume59
Issue number1
DOIs
Publication statusPublished - 2017 Feb

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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