Design of a textile antenna with artificial magnetic conductor for wearable applications

Mersani, Ameni; Osman, Lotfi; Ribero, Jean‐Marc

doi:10.1002/mop.31158

Cited by 39 publications

(16 citation statements)

References 12 publications

(13 reference statements)

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“…Physical dimension comparison in terms of wavelength at the lowest operating frequency with antennas in the literature indicated that the proposed antenna featured a more compact size relative to [27] and [29]. Besides that, the gain obtained by the proposed antenna is also improved compared with those presented in [27], [28], [29], [30], and [31] at 5.8 GHz. Moreover, the obtained FBR in this work is also improved compared with [28] and [29].…”

Section: Design 3: Crown-shaped Patch With Amc Planementioning

confidence: 80%

Gain Optimization of Low-Profile Textile Antennas Using CMA and Active Mode Subtraction Method

et al. 2021

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This paper presents an active mode subtraction method based on the characteristic mode analysis to estimate the forward directivity based on the difference in modal significance curves. This made the optimization of the antenna gain in the design process to be more efficient. To the best of the authors' knowledge, such method is innovative and proposed in literature for the first time. This method is derived on the basis that the total radiated field of the antenna, and consequently, the directivity is mainly contributed by the excited dominant modes. To demonstrate its effectiveness, three compact, planar, and wearable antennas with increasing complexity will be designed and optimized using this method. The first is a conventional circular patch antenna operating at 5.3 GHz, whereas the second one is a planar loop antenna operating at 3.08 GHz. The third design is a crown-shaped planar antenna (CPA) with a 3 × 3 artificial magnetic conductor (AMC) plane integrated underneath to reduce potential coupling effects from the body. All three antennas are made fully using textiles with the same thicknesses: felt fabric as its substrate and ShieldIt Super as its conductive textile. For all designs, the use of the proposed method, which is validated using the method of moments, has predicted the maximum direction of radiation and its respective gain at the desired frequencies with good accuracy. Besides that, the design of the AMC plane for the CPA is also optimized using CMA prior to the integration with the antenna and a leather wrist strap. Measurements of the final crown-shaped antenna design indicated a good agreement with simulations, with an operating bandwidth of more than 240 MHz, FBR of 15.73 dB and a directional radiation pattern outward from the body.

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Section: Design 3: Crown-shaped Patch With Amc Planementioning

confidence: 80%

Gain Optimization of Low-Profile Textile Antennas Using CMA and Active Mode Subtraction Method

et al. 2021

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“…Based on the works of Italian National Research Council the electrical properties of the tissues at three different resonance frequencies i.e. 3, 5, and 10 GHz are given in Table 3, which are easily available online [23]. To show the effect of human body on the proposed antenna parameters, an inhomogeneous three-layered body model containing skin, fat, and muscle is simulated in computer simulation technology microwave studio (CST MWS) version 16.0.…”

Section: Study Of Uwb and Integrated Wearable Antennasmentioning

confidence: 99%

“…The proposed integrated antenna has an optimum size of 50 × 44.4 mm 2 , largest operating bandwidth of 13.7 GHz and gain of 8 dB. Further, the radiation efficiency is not considered in most of the papers except [7, 14, 23, 24], whereas the proposed antenna gave comparatively highest radiation efficiency of 85%. Therefore, we can say that the designed antenna gave optimum and quite satisfactory results and can be considered as a good candidate for wearable applications.…”

Section: Study Of Uwb and Integrated Wearable Antennasmentioning

confidence: 99%

Design and performance analysis of a conformal CPW fed wideband antenna with Mu-Negative metamaterial for wearable applications

Negi

Khanna

Kaur

2019

Int. J. Microw. Wireless Technol.

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In this paper, a flexible CPW fed ultrawide band (UWB) antenna with mu-negative (MNG) metamaterial is designed, fabricated, and tested for wearable applications. Initially, a UWB antenna of size 50 mm × 43 mm is fabricated on two different substrates, viz. flexible FR4 and semi-flexible Rogers RT/duroid 5880. A metamaterial structure fabricated on flexible FR4 shows a magnetic resonance from 7.2 GHz to 9.2 GHz with maximum stop band attenuation (−49 dB) and high MNG value (−2121.6) at 7.87 GHz. Then a (3 × 3) array of designed MNG metasurface is used as ground plane with flexible UWB antenna, which improves its overall gain and radiation pattern. The performance of the flexible antenna with/without metamaterial at various distances from flat and cylindrical three-layered human phantom of skin, fat, and muscle is studied. Further, the bending characteristics at different angles and performance over thin metallic sheet is also evaluated. Additionally, the peak specific absorption rate value averaged over 1 g of tissue at three chosen frequencies from UWB range (3, 5, 10 GHz) with/without metamaterial using 0.3 and 0.1 W of input power is also analyzed. The simulated and measured results are in good agreement which confirms that the designed antenna is a good candidate for wearable applications.

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“…Finally, an EBG can be grouped in terms of design configuration such as Mushroom and uniplanar configuration 10,12 . The commonly designed EBG is a single band with a 2‐D configuration 8,10,13–16 . Dual‐band EBGs have been proposed in the literature such as Refs.…”

Section: Introductionmentioning

confidence: 99%

“…10,12 The commonly designed EBG is a single band with a 2-D configuration. 8,10,[13][14][15][16] Dual-band EBGs have been proposed in the literature such as Refs. 17-19.…”

mentioning

confidence: 99%

Compact bio‐inspired dual‐band uniplanar electromagnetic bandgap‐backed antenna for wearable applications

Abolade¹,

Konditi

Dharmadhikary

2021

Int J RF Mic Comp-Aid Eng

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A compact bio‐inspired electromagnetic bandgap integrated wearable antenna (Bio‐EBG‐iwA) is proposed in this work. The Bio‐EBG‐iwA is based on the hybridization of semi‐Vitis vinifera leaf‐shaped patch, asymmetric feedline, reflected G‐shaped slot, partial ground, and a stub on the ground plane. The antenna is built on the locally made textile material called Aso‐oke (Alari) with permittivity and a loss tangent of 1.43 and 0.019, respectively. The dimension of the proposed antenna is 0.20.25emλg×0.10.25emλg×0.00890.25emλg (22 mm × 12 mm × 0.7 mm) at 2.45 GHz. Despite its compactness, the gain of −0.48 and 2.5 dBi are achieved at 2.45 and 5.7 GHz respectively without electromagnetic bandgap (EBG). A dual‐band textile‐based uniplanar compact electromagnetic bandgap (UC‐EBG) is introduced to create isolation between the human tissue and the antenna. The dual‐band UC‐EBG is realized through the use of a modified slitted‐square ring (MSSR) and the 90° rotated H‐shaped patch on Aso‐oke (Alari) with a thickness of 2.1 mm. The periodicity of the proposed UC‐EBG is 34.5 mm. The antenna is placed on a 2 × 2 array of the proposed UC‐EBG separated by a 3 mm foam thickness. The radiation efficiency of 88.97% and 79.85% are achieved at 2.45 and 5.7 GHz respectively. The gain of the proposed UC‐EBG integrated antenna increased from −0.48 and 2.5 dBi to 5.9 and 10.7 dBi at 2.45 and 5.7 GHz, respectively. The front‐to‐back ratio (FBR) of 26.3 dB is achieved with the use of UC‐EBG. The use of UC‐EBG results in a 98.31% and 99.4% reduction in average SAR at 2.45 and 5.7 GHz, respectively. The off‐body and on‐body performance analysis of the proposed UC‐EBG integrated antenna show that the proposed EBG integrated antenna (Bio‐EBG‐iwA) is a suitable candidate for wearable application. To the best of our knowledge, this is the most compact wearable antenna with suitable gain, radiation efficiency, and high FBR. In addition, our proposed UC‐EBG shows that slitting is an effective way of miniaturizing the EBG structure.

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Design of a textile antenna with artificial magnetic conductor for wearable applications

Cited by 39 publications

References 12 publications

Gain Optimization of Low-Profile Textile Antennas Using CMA and Active Mode Subtraction Method

Gain Optimization of Low-Profile Textile Antennas Using CMA and Active Mode Subtraction Method

Design and performance analysis of a conformal CPW fed wideband antenna with Mu-Negative metamaterial for wearable applications

Compact bio‐inspired dual‐band uniplanar electromagnetic bandgap‐backed antenna for wearable applications

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