Circular Polarization Textile Antenna for GPS Application

Salleh, Shakhirul Mat; Jusoh, M.; Ismail, A. H.; Yasin, Mohd Najib Mohd; Kamarudin, M. R.; Yahya, Roshayati

doi:10.1007/978-3-319-17269-9_28

Cited by 2 publications

(2 citation statements)

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“…It is well known that bending the antenna in some particular direction degrades its performance for the intended application [107]. This is not limited in terms of shifting their resonant frequency, but also affects antenna polarization, especially, when circular polarization is required [108]. One of the techniques to alleviate these effects and maintain antenna performance during bending or crumpling is to ensure a wideband operation.…”

Section: Effects Of Bending On Wearable Antennasmentioning

confidence: 99%

“…For wearable CP antennas, bending affects their radiation performance, as expected. Bending not only changes their resonant frequency for such CP antennas but also degrades its polarization properties [108]. On the contrary, bending affects the resonant frequency of linearly-polarized antennas due to changes in its effective length.…”

Section: Effects Of Bending On Wearable Antennasmentioning

confidence: 99%

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Wearable Antennas: A Review of Materials, Structures, and Innovative Features for Autonomous Communication and Sensing

et al. 2019

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Wearable antennas have gained much attention in recent years due to their attractive features and possibilities in enabling lightweight, flexible, low cost, and portable wireless communication and sensing. Such antennas need to be conformal when used on different parts of the human body, thus need to be implemented using flexible materials and designed in a low profile structure. Ultimately, these antennas need to be capable of operating with minimum degradation in proximity to the human body. Such requirements render the design of wearable antennas challenging, especially when considering aspects such as their size compactness, effects of structural deformation and coupling to the body, and fabrication complexity and accuracy. Despite slight variations in severity according to applications, most of these issues exist in the context of body-worn implementation. This review aims to present different challenges and issues in designing wearable antennas, their material selection, and fabrication techniques. More importantly, recent innovative methods in back radiations reduction techniques, circular polarization (CP) generation methods, dual polarization techniques, and providing additional robustness against environmental effects are first presented. This is followed by a discussion of innovative features and their respective methods in alleviating these issues recently proposed by the scientific community researching in this field. INDEX TERMSWearable devices, Internet of Things (IoT), wearable antennas, flexible, reconfigurable antennas, energy harvesting for wearable devices, specific absorption rate (SAR).

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Section: Effects Of Bending On Wearable Antennasmentioning

confidence: 99%

Section: Effects Of Bending On Wearable Antennasmentioning

confidence: 99%