Wearable dual-band antenna with harmonic suppression for application in medical communication systems

Khajeh-Khalili, Farzad; Haghshenas, Fatemeh; Shahriari, Ali

doi:10.1016/j.aeue.2020.153396

Cited by 15 publications

(6 citation statements)

References 19 publications

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“…Table 2 presents the comparison of the proposed antenna with reported works in literature. It could be observed that the proposed work offers compact size as compared to [9,10,[13][14][15][16], although the antenna presented in [11,12] has compact size as compared to this work, their work is limited to rigid circuits along with narrow bandwidth. Thus, it can be concluded that the proposed antenna outperforms other related works and becomes a potential candidate for the present and future communication systems.…”

Section: Comparison With State-of-the-art-workmentioning

confidence: 83%

“…Researchers have designed several single and dual band flexible antennas for 900 MHz and 2450 MHz, which are the most commonly used ISM bands [8][9][10][11][12][13][14][15][16][17][18][19]. For instance, a compact flexible fractal antenna was presented in [8] at 2450 MHz.…”

Section: Introductionmentioning

confidence: 99%

“…The antenna offered wide operational bandwidth with drawbacks such as large dimension and negative gain at lower resonance. Contrary to this, a dual-band flexible antenna based on the felt substrate was presented in [16], which offered compact size along with reasonable gain at the cost of structural complexity due to vias and unsatisfactory performance in the conformable condition.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Compact Dual-Band Flexible Antenna for Applications at 900 and 2450 MHZ

Ghaffar¹,

Awan²,

Hussain³

et al. 2021

PIER Letters

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A dual band flexible antenna for applications at 900 and 2450 MHz is proposed in this paper. The antenna offers a compact size of 0.23λ o × 0.120λ o × 0.0007λ o , where λ o is the wavelength at the lower resonance. The antenna comprises a simple geometrical structure consisting of a W-shaped serpentine structure fed by a microstrip line, while a Defected Ground Structure (DGS) technique was utilized with a partial ground plane to achieve wide operational bandwidth. An additional capacitor was loaded in between the slots to achieve a higher resonance, thus resulting in a compact dual-band antenna. Various performance parameters were analyzed, and results were compared with the measured ones. The antenna offers good performance in terms of size, bandwidth, gain, and radiation pattern and thus increases the potential of the proposed antenna for both rigid and flexible devices.

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Section: Comparison With State-of-the-art-workmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Compact Dual-Band Flexible Antenna for Applications at 900 and 2450 MHZ

Ghaffar¹,

Awan²,

Hussain³

et al. 2021

PIER Letters

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show abstract

“…The other sends data to external station, which is called off-body communication [8]. Thus, the crucial component of the wearable devices is the wearable antenna [9][10][11][12]. In contrast to antennas working in free space, the performance of the wearable antenna, such as radiation characteristics, gain, and reflection coefficients, is influenced by the presence of human biological tissue as a result of its high permittivity nature.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, the antenna radiation efficiency in free space was only 75%. A wearable antenna fabricated on felt substrate material with dimensions of (60×60 ×2) mm 3 operating in the ISM band was introduced in [10]. This antenna was designed with a narrow impedance bandwidth (BW) feature.…”

Section: Introductionmentioning

confidence: 99%

Flexible Wearable Antenna Based on AMC with Different Materials for Bio-telemetry Applications

Kamel,

Mohamed,

Elsadek

et al. 2024

PIER M

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In this work, a low-profile and flexible antenna operating in the ISM (2.4-2.4835) GHz band for bio-telemetry applications is presented. This antenna is designed on two flexible substrate materials: Roger RO3003 with a thickness of 0.254 mm and jeans fabric material with a thickness of 0.7 mm, of an overall foot print of 20 × 30 mm 2 . The deformation bending of the designed antenna in two different cases is studied. The designed antenna is backed by a 3 × 3 artificial magnetic conductor (AMC) array structure, which resulted in the final design configuration. The antenna is backed by an AMC array structure to achieve a lower specific absorption rate (SAR) as well as high gain when it is mounted on biological tissue. For validation, the antenna is fabricated on two flexible substrate materials and then measured in free space as well as on four different parts of the realistic human (chest, back, arm, and leg) body with and without AMC structure. Furthermore, the SAR is measured on cSAR3D flat. Finally, for reliable communication, the link margin is calculated.

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Textile‐based high‐gain bow‐tie antenna using metamaterials for medical applications

Khajeh‐Khalili,

Shirvani,

Neshati

2024

Engineering Reports

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This paper presents a high‐gain wearable circularly polarized bow‐tie antenna (WCPBTA) with metamaterial unit‐cells and 5 pins (5Ps) technique for telemedicine applications such as telemonitoring the elderly or the patients especially for emergency conditions of contagious diseases. The frequency range of the proposed antenna is 5.725–5.850 GHz, which belongs to the unlicensed‐national information infrastructure (U‐NII‐3) for the industrial, scientific, and medical (ISM) sub‐channels. A light‐weight and flexible felt with dielectric constant εr = 3, thickness 1.27 mm, and tan (δ) = 0.0095 is used as the substrate for patient comfort and wearability. The overall dimensions of the proposed antenna are 64 × 62 × 1.27 mm3 or 0.102 λg3 at 5.8 GHz. The maximum simulated gain at 5.8 GHz is 8.25 dB, which is more than 4 dB compared to that of the original bow‐tie antenna. Besides, the axial ratio (AR) and the specific absorption rate (SAR) are also analyzed, which meet the perfect requirement for medical applications. The fabricated prototype of the antenna shows good compatibility between simulation and measurement results. These characteristics make the proposed WCPBTA a good choice for wireless body area networks (WBANs) in telemonitoring applications especially with the aim of preventing the spread of contagious diseases.

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Wearable dual-band antenna with harmonic suppression for application in medical communication systems

Cited by 15 publications

References 19 publications

A Compact Dual-Band Flexible Antenna for Applications at 900 and 2450 MHZ

A Compact Dual-Band Flexible Antenna for Applications at 900 and 2450 MHZ

Flexible Wearable Antenna Based on AMC with Different Materials for Bio-telemetry Applications

Textile‐based high‐gain bow‐tie antenna using metamaterials for medical applications

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