Wearable Antenna Integrated into Military Berets for Indoor/Outdoor Positioning System

A wearable antenna integrated into a military beret for an indoor/outdoor positioning system is proposed. The antenna consists of a truncated patch and a circular ring patch with four conductive threads. The truncated patch antenna is designed for the Global Positioning System (GPS) L1 band for use...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2017, Vol.16, p.1919-1922
Main Authors: Lee, Heejae, Tak, Jinpil, Choi, Jaehoon
Format: Article
Language:English
Subjects:
and medical (ISM)
Antenna measurements
Antenna radiation patterns
Circularity
Deformation effects
Global Positioning System
Global positioning system (GPS)
Global positioning systems
GPS
industrial
Loss measurement
Military
military beret
Patch antennas
Phantoms
Product design
radio frequency identification (RFID)
Satellite navigation systems
science
specific absorption rate (SAR)
textile antenna
wearable antenna
Wearable technology
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Summary:A wearable antenna integrated into a military beret for an indoor/outdoor positioning system is proposed. The antenna consists of a truncated patch and a circular ring patch with four conductive threads. The truncated patch antenna is designed for the Global Positioning System (GPS) L1 band for use in outdoor situations, and the circular ring patch antenna with four conductive threads operates at the TM 41 higher-order resonance mode (915 MHz) with a monopole-like radiation characteristic for indoor positioning systems. The antenna is fabricated using textile materials and is integrated into a military beret. The effects of the antenna deformation due to the shape of the military beret and the effects of the human head are analyzed via both simulation and measurement. The simulated and measured 10-dB return-loss bandwidths of the antenna on the head phantom fully cover the 915-MHz industrial, science, and medical band and the 1.575-GHz GPS L1 band.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2017.2688400