A Novel Folded UWB Antenna for Wireless Body Area Network

A novel folded ultrawideband antenna for Wireless Body Area Network (WBAN) is proposed, which can effectively reduce the backward radiation and proximity effects of human bodies. The proposed antenna has a low-profile 3D structure that consists of a bevel-edge feed structure and a metal plate with f...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2012-02, Vol.60 (2), p.1139-1142
Main Authors: KANG, Cheng-Hung, WU, Sung-Jung, TAMG, Jenn-Hwan
Format: Article
Language:English
Subjects:
3-D antenna
Antenna measurements
Antenna radiation patterns
Antennas
Applied sciences
Bandwidth
Body-area network
Exact sciences and technology
Human body
Metal plates
Networks
Proximity effect (electricity)
Radiocommunications
Resonant frequency
Strip
Telecommunications
Telecommunications and information theory
Three dimensional
Ultra wideband antennas
ultrawideband
Wireless communication
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Description
Summary:A novel folded ultrawideband antenna for Wireless Body Area Network (WBAN) is proposed, which can effectively reduce the backward radiation and proximity effects of human bodies. The proposed antenna has a low-profile 3D structure that consists of a bevel-edge feed structure and a metal plate with folded strip. The bevel edge feed structure achieves broadband impedance matching and the metal plate acts as the main radiator. Moreover, the folded strip not only extends the lower frequency band but also provides additional resonant frequency around 6 GHz. The final bandwidth covers from 3.1 GHz to 12 GHz. The proposed antenna shows the directional patterns with low backward radiation due to the patch-like structure and the ground plane also prevents from the proximity effects of human bodies. Furthermore, the simulated SAR values of the proposed antenna are lower than the values of omnidirectional disc planar monopole. These features demonstrate that the proposed antenna is suitable for WBAN application.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2011.2173101