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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Trajkovikj, J. Skrivervik, A.K. |
| Copyright Year | 2002 |
| Abstract | This letter presents a study on the specific absorption rate (SAR) evaluation of UHF wearable antennas. A planar inverted-F antenna (PIFA) intended to operate in wireless body area networks (WBANs) is taken as an example for the investigation. The presence of the ground plane introduces isolation between the body and the wearable antenna and decouples the antenna from the body, thus resulting in lower SAR values. The performed analysis of the proposed PIFA indicates increased near-field regions close to the shorting wall, which directly leads to increased SAR values. This can be avoided if alternative current paths are provided, e.g., extending the ground plane slightly. The dielectric materials used as substrates partially reduce the SAR by confining part of the fields inside the dielectric. All the suggested solutions are easily applicable for a practical implementation. |
| Sponsorship | IEEE Antennas and Propagation Society |
| Starting Page | 1530 |
| Ending Page | 1533 |
| Page Count | 4 |
| File Size | 464272 |
| File Format | |
| ISSN | 15361225 |
| Volume Number | 14 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-01-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Dipole antennas Substrates Dielectrics Antenna feeds wireless body area network (WBAN) PDMS planar inverted-F antenna (PIFA) reactive near fields specific absorption rate (SAR) UHF wearable antennas |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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