A stretchable smart and highly efficient radio frequency antenna on low cost substrate

Nivethika, S Deepa; Sreeja, B. S.; Manikandan, E.; Radha, S.

doi:10.1002/mop.31242

Cited by 11 publications

(5 citation statements)

References 23 publications

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“…Several other variations of this polymer substrate have been mixed or modified to realize highly stretchable dielectric substrates. Next, a smart composite antenna has been proposed in [35]. This antenna is fabricated using Ag conductive elastomeric cloth as its radiator and ethyl vinyl acetate (EVA) as the dielectric substrate.…”

Section: Figure 5 (A) Pdms-ceramic Compositementioning

confidence: 99%

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: Figure 5 (A) Pdms-ceramic Compositementioning

confidence: 99%

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

et al. 2019

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“…Substituting equation (5) and equation (10) into equation (14) to have equation (15) produces the new hybrid outage probability model deployed.…”

Section: Outage Probability Of Egc-mrcmentioning

confidence: 99%

“…In wireless system, different diversity schemes are deployed to solve the problem of poor received signal and to obtain better network performance in mobile radio system [4]. Diversity scheme combine signals suffering from multipath propagation to obtain a reliable and improved output signal [5]. Some of the frequently used fading channel model in wireless communication system are Wiebull, Rician, Rayleigh and Nakagami [6].…”

Section: Introductionmentioning

confidence: 99%

Untitled

2020

IJCSIT

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Diversity combining is a technique in wireless network that uses multiple antenna system to improve the quality of radio signal. Mobile radio system suffers multipath propagation due to signal obstruction in the channel. A new hybridized diversity combining scheme consisting of Equal Gain Combining (EGC) and Maximal Ratio Combining (MRC) was proposed in this paper. Theperformance of the hybrid model was evaluated using Outage Probability (Pout) and Processing time (Pt) at different Signal-to-Noise Ratio (SNR) and Signal Paths (L=2,3) for 4-QAM and 8-QAM Modulation Schemes. A mathematical expression for the hybrid EGC-MRC was realized using the Probability Density Function (PDF) of the Nakagami fading channel. MATLAB R2015b software was used for the model simulation. The result shows that hybrid EGC-MRC outperforms the standalone EGC and MRC schemes by having lower Pout and Pt values. Hence, hybrid EGC-MRC exhibits enhanced potentials to mitigate multipath propagation at reduced system complexity.

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“…Physical factors such as bending [ 7 ], stretching [ 8 , 9 , 10 , 11 ] and temperature [ 12 , 13 ] tend to shift the resonance frequency of an antenna. Because of the hydrophilic character of textiles, textile antennas are affected more by humidity compared to non-textile-based antennas such as FR4, RT/Duroid and hydrophobic foam.…”

Section: Introductionmentioning

confidence: 99%

Breathable Textile Rectangular Ring Microstrip Patch Antenna at 2.45 GHz for Wearable Applications

Memon

Paula

Malengier

et al. 2021

Sensors

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A textile patch antenna is an attractive package for wearable applications as it offers flexibility, less weight, easy integration into the garment and better comfort to the wearer. When it comes to wearability, above all, comfort comes ahead of the rest of the properties. The air permeability and the water vapor permeability of textiles are linked to the thermophysiological comfort of the wearer as they help to improve the breathability of textiles. This paper includes the construction of a breathable textile rectangular ring microstrip patch antenna with improved water vapor permeability. A selection of high air permeable conductive fabrics and 3-dimensional knitted spacer dielectric substrates was made to ensure better water vapor permeability of the breathable textile rectangular ring microstrip patch antenna. To further improve the water vapor permeability of the breathable textile rectangular ring microstrip patch antenna, a novel approach of inserting a large number of small-sized holes of 1 mm diameter in the conductive layers (the patch and the ground plane) of the antenna was adopted. Besides this, the insertion of a large number of small-sized holes improved the flexibility of the rectangular ring microstrip patch antenna. The result was a breathable perforated (with small-sized holes) textile rectangular ring microstrip patch antenna with the water vapor permeability as high as 5296.70 g/m2 per day, an air permeability as high as 510 mm/s, and with radiation gains being 4.2 dBi and 5.4 dBi in the E-plane and H-plane, respectively. The antenna was designed to resonate for the Industrial, Scientific and Medical band at a specific 2.45 GHz frequency.

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A stretchable smart and highly efficient radio frequency antenna on low cost substrate

Cited by 11 publications

References 23 publications

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

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

Untitled

Breathable Textile Rectangular Ring Microstrip Patch Antenna at 2.45 GHz for Wearable Applications

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