A Novel Approach for Fabrication of Flexible Antennas for Biomedical Applications

Starodubov, A. V.; Галушка, В. В.; Serdobintsev, Alexey A.; Pavlov, Anton M.; Коршунова, Г. А.; Ryabukho, P. V.; Gorodkov, S. Yu.

doi:10.1109/mms.2018.8612092

Cited by 7 publications

(3 citation statements)

References 13 publications

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“…For example, an embroidered geometry is much more stretchable than metallic antenna sensors on inlays. The limited resolution of the yarn stitches and the impact of stretching render delicate geometries useless [ 44 , 45 ].…”

Section: Resultsmentioning

confidence: 99%

A High Performance All-Textile Wearable Antenna for Wristband Application

et al. 2023

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A compact, conformal, all-textile wearable antenna is proposed in this paper for the 2.45 GHz ISM (Industrial, Scientific and Medical) band. The integrated design consists of a monopole radiator backed by a 2 × 1 Electromagnetic Band Gap (EBG) array, resulting in a small form factor suitable for wristband applications. An EBG unit cell is optimized to work in the desired operating band, the results of which are further explored to achieve bandwidth maximization via floating EBG ground. A monopole radiator is made to work in association with the EBG layer to produce the resonance in the ISM band with plausible radiation characteristics. The fabricated design is tested for free space performance analysis and subjected to human body loading. The proposed antenna design achieves bandwidth of 2.39 GHz to 2.54 GHz with a compact footprint of 35.4 × 82.4 mm2. The experimental investigations reveal that the reported design adequately retains its performance while operating in close proximity to human beings. The presented Specific Absorption Rate (SAR) analysis reveals 0.297 W/kg calculated at 0.5 W input power, which certifies that the proposed antenna is safe for use in wearable devices.

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Section: Resultsmentioning

confidence: 99%

A High Performance All-Textile Wearable Antenna for Wristband Application

et al. 2023

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“…The antennas comprised a semi-flexible material formed on a Roger 3003C substrate in a technology process comprising the following basic stages. First, a copper annealed conductive coating was deposited onto the Rogers substrate [29,30]. In the second stage, the pattern of the antenna structure was made on the copper film using a laser inkjet printing technique.…”

Section: Fabrication and Measurements Of The Proposed Antennamentioning

confidence: 99%

“…Fabricated examples of flexible antennas for ISM bands 2.45 and 5.8 GHz are shown in Figure 22. [29,30]. In the second stage, the pattern of the antenna structure was made on film using a laser inkjet printing technique.…”

Section: Fabrication and Measurements Of The Proposed Antennamentioning

confidence: 99%

An Artificial Magnetic Conductor-Backed Compact Wearable Antenna for Smart Watch IoT Applications

et al. 2021

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Smart watch antenna design is challenging due to the limited available area and the contact with the human body. The strap of smart watch can be utilized effectively for integration of the antenna. In this study, an antenna integrated on a smart watch strap model using computer simulation technology (CST) was designed. The antenna was designed for industrial, scientific, and medical (ISM) frequency bands at 2.45 and 5.8 GHz. Roger 3003C was used as substrate due to its semi-flexible nature. The antenna size is 28.81 × 19.22 × 1.58 mm3 and it has a gain of 1.03 and 5.97 dB, and efficiency of 80% and 95%, at 2.45 and 5.8 GHz, on the smart watch strap, respectively. A unit cell was designed having a dimension of 19.19 × 19.19 × 1.58 mm3 to mitigate the effect of back radiation and to enhance the gain. The antenna backed by the unit cell exhibited a gain of 2.44 and 6.17 dB with efficiency of 50% and 72% at 2.45 and 5.8 GHz, respectively. The AMC-backed antenna was integrated into a smart watch strap and placed on a human tissue model to study its human proximity effects. The specific absorption rate (SAR) values were calculated to be 0.19 and 1.18 W/kg at the designed ISM frequencies, and are well below the permissible limit set by the FCC and ICINPR. Because the antenna uses flexible material for wearable applications, bending analysis was also undertaken. The indicated results prove that bending along the x- and y-axes has a negligible effect on the antenna’s performance and the antenna showed excellent performance in the human proximity test. The measured results of the fabricated antenna were comparable with the simulated results. Thus, the designed antenna is compact, has high gain, and can be used effectively for wireless IoT applications.

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