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Foldable all-textile cavity-backed slot antennas for personal UWB localization

Dries Van Baelen (UGent) , Quinten Van den Brande (UGent) , Sam Lemey (UGent) , Jo Verhaevert (UGent) and Hendrik Rogier (UGent)
(2020) RADIO SCIENCE. 55(3).
Author
Organization
Abstract
An all-textile multimoded cavity-backed slot antenna has been designed and fabricated for body-worn impulse radio ultra-wideband (IR-UWB) operation in the 3,744-4,742.4 MHz frequency band, thereby covering Channels 2 and 3 of the IEEE 802.15.4a standard. Its light weight, mechanical flexibility, and small footprint of 35 mm x 56 mm facilitate integration into textile for radio communication equipment for first aid responders, personal locator beacons, and equipment for localization and medical monitoring of children or the elderly. The antenna features a stable radiation pattern and reflection coefficient in diverse operating conditions such as in free space, when subject to diverse bending radii and when deployed on the torso or upper right arm of a test person. The high isolation toward the wearer's body originates from the antenna's hemispherical radiation pattern with a -3 dB beamwidth of 120 degrees and a front-to-back ratio higher than 11 dB over the entire band. Moreover, the antenna exhibits a measured maximum gain higher than 6.3 dBi and a radiation efficiency over 75%. In addition, orientation-specific pulse distortion introduced by the antenna element is analyzed by means of the System Fidelity Factor (SFF). The SFF of the communication link between two instances of this antenna is higher than 94% for all directions within the antenna's -3 dB beamwidth. This easily wearable and deployable antenna is suitable to support IR-UWB localization with an accuracy in the order of 5 cm.
Keywords
BODY, ROBUST

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Citation

Please use this url to cite or link to this publication:

MLA
Van Baelen, Dries, et al. “Foldable All-Textile Cavity-Backed Slot Antennas for Personal UWB Localization.” RADIO SCIENCE, vol. 55, no. 3, 2020.
APA
Van Baelen, D., Van den Brande, Q., Lemey, S., Verhaevert, J., & Rogier, H. (2020). Foldable all-textile cavity-backed slot antennas for personal UWB localization. RADIO SCIENCE, 55(3).
Chicago author-date
Van Baelen, Dries, Quinten Van den Brande, Sam Lemey, Jo Verhaevert, and Hendrik Rogier. 2020. “Foldable All-Textile Cavity-Backed Slot Antennas for Personal UWB Localization.” RADIO SCIENCE 55 (3).
Chicago author-date (all authors)
Van Baelen, Dries, Quinten Van den Brande, Sam Lemey, Jo Verhaevert, and Hendrik Rogier. 2020. “Foldable All-Textile Cavity-Backed Slot Antennas for Personal UWB Localization.” RADIO SCIENCE 55 (3).
Vancouver
1.
Van Baelen D, Van den Brande Q, Lemey S, Verhaevert J, Rogier H. Foldable all-textile cavity-backed slot antennas for personal UWB localization. RADIO SCIENCE. 2020;55(3).
IEEE
[1]
D. Van Baelen, Q. Van den Brande, S. Lemey, J. Verhaevert, and H. Rogier, “Foldable all-textile cavity-backed slot antennas for personal UWB localization,” RADIO SCIENCE, vol. 55, no. 3, 2020.
@article{8661984,
  abstract     = {An all-textile multimoded cavity-backed slot antenna has been designed and fabricated for body-worn impulse radio ultra-wideband (IR-UWB) operation in the 3,744-4,742.4 MHz frequency band, thereby covering Channels 2 and 3 of the IEEE 802.15.4a standard. Its light weight, mechanical flexibility, and small footprint of 35 mm x 56 mm facilitate integration into textile for radio communication equipment for first aid responders, personal locator beacons, and equipment for localization and medical monitoring of children or the elderly. The antenna features a stable radiation pattern and reflection coefficient in diverse operating conditions such as in free space, when subject to diverse bending radii and when deployed on the torso or upper right arm of a test person. The high isolation toward the wearer's body originates from the antenna's hemispherical radiation pattern with a -3 dB beamwidth of 120 degrees and a front-to-back ratio higher than 11 dB over the entire band. Moreover, the antenna exhibits a measured maximum gain higher than 6.3 dBi and a radiation efficiency over 75%. In addition, orientation-specific pulse distortion introduced by the antenna element is analyzed by means of the System Fidelity Factor (SFF). The SFF of the communication link between two instances of this antenna is higher than 94% for all directions within the antenna's -3 dB beamwidth. This easily wearable and deployable antenna is suitable to support IR-UWB localization with an accuracy in the order of 5 cm.},
  articleno    = {e2019RS006990},
  author       = {Van Baelen, Dries and Van den Brande, Quinten and Lemey, Sam and Verhaevert, Jo and Rogier, Hendrik},
  issn         = {0048-6604},
  journal      = {RADIO SCIENCE},
  keywords     = {BODY,ROBUST},
  language     = {eng},
  location     = {New Delhi, INDIA},
  number       = {3},
  pages        = {11},
  title        = {Foldable all-textile cavity-backed slot antennas for personal UWB localization},
  url          = {http://dx.doi.org/10.1029/2019RS006990},
  volume       = {55},
  year         = {2020},
}

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