Multiband Flexible Antenna for Wearable Personal Communications

Bolaños-Torres, Miguel Ángel; Muñoz‐Pacheco, Jesús M.; Gómez-Pavón, L. C.; Tamariz-Flores, Edna Iliana

doi:10.1007/s11277-018-5670-0

Cited by 21 publications

(9 citation statements)

References 26 publications

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“…The criteria to classify the antenna in wideband is based on fractional bandwidth, which must be higher than 0.2. CPW antennas are used in mobile communication systems [20]. The frequency interval in which the antenna must operate, following the 5G-NR standard, is 3.7-4.2 GHz if we consider the mid-frequency bands in North America [1,2,5].…”

Section: One-element Transparent Antenna Designmentioning

confidence: 99%

A MIMO Transparent Antenna for FR1-5G Communications

Lopez-Marcos

Torrealba-Meléndez

Vásquez-Agustín

et al. 2021

Wireless Pers Commun

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In this article, the design and experimental characterization of a transparent MIMO fractal antenna compatible with 5G communications are presented. An Indium Tin Oxide (ITO) film with a thickness of 150 nm deposited over a glass substrate was used to fabricate the proposed antenna. This antenna is conformed by a pair of CPW-fed octagonal patch. Both patches were modified using a fractal structure, based on a Minkowsky geometry. The antenna was designed to operate in the frequency range from 3 to 5 GHz, which covers the C-band 5G-NR standard frequency assigment. As a result of the experimental characterization, S 1 1 and S 2 2 parameters are below − 10 dB, meanwhile the transmission coefficients S 2 1 and S 1 2 are under − 20 dB in the desired band. The Envelope Correlation Coefficient (ECC) is between 0.02 and 0.45, and a Diversity Gain (DG) over 9.05 in the frequency range from 3 to 6 GHz. These experimental results agree with the MIMO system in the required band.

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Section: One-element Transparent Antenna Designmentioning

confidence: 99%

A MIMO Transparent Antenna for FR1-5G Communications

Lopez-Marcos

Torrealba-Meléndez

Vásquez-Agustín

et al. 2021

Wireless Pers Commun

Self Cite

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“…These measurements include the specific absorption rate (SAR) analysis, humidity, bending effect, thermal and robustness test, which is not often used in other conventional antennas applications. The UWB antennas, designed with fabric like jeans and cotton or perforated plastic as a substrate, can be used as a wearable device on the human body due to its low effect on the human body [22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Wireless Body Area Networks: UWB Wearable Textile Antenna for Telemedicine and Mobile Health Systems

Yadav¹,

Singh

Bhoi

et al. 2020

Micromachines

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A compact textile ultra-wideband (UWB) antenna with an electrical dimension of 0.24λo × 0.24λo × 0.009λo with microstrip line feed at lower edge and a frequency of operation of 2.96 GHz is proposed for UWB application. The analytical investigation using circuit theory concepts and the cavity model of the antenna is presented to validate the design. The main contribution of this paper is to propose a wearable antenna with wide impedance bandwidth of 118.68 % (2.96–11.6 GHz) applicable for UWB range of 3.1 to 10.6 GHz. The results present a maximum gain of 5.47 dBi at 7.3 GHz frequency. Moreover, this antenna exhibits Omni and quasi-Omni radiation patterns at various frequencies (4 GHz, 7 GHz and 10 GHz) for short-distance communication. The cutting notch and slot on the patch, and its effect on the antenna impedance to increase performance through current distribution is also presented. The time-domain characteristic of the proposed antenna is also discussed for the analysis of the pulse distortion phenomena. A constant group delay less than 1 ns is obtained over the entire operating impedance bandwidth (2.96–11.6 GHz) of the textile antenna in both situations, i.e., side by side and front to front. Linear phase consideration is also presented for both situations, as well as configurations of reception and transmission. An assessment of the effects of bending and humidity has been demonstrated by placing the antenna on the human body. The specific absorption rate (SAR) value was tested to show the radiation effect on the human body, and it was found that its impact on the human body SAR value is 1.68 W/kg, which indicates the safer limit to avoid radiation effects. Therefore, the proposed method is promising for telemedicine and mobile health systems.

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“…A remarkable and well-known trivia observed is that there is a deviation in resonant frequency under bending conditions. The onbody effects and the bending performance are analyzed in References 14,16,19,26,28,31,33,37,41,43. Considering the above attributes for flexible and wearable antenna design, this communication presents a wearable and flexible multiband antenna for WBAN applications. The proposed antenna provides a new lowprofile multiband frequency band of operation which covers a number of well-recognized frequency bands providing resonance at 2.4 GHz, 3.5 GHz, 4.4 GHz, 5.2 GHz, and 5.8 GHz, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…In Reference 34, a multiband wearable antenna is proposed and in Reference 35 a quadband antenna for WBAN applications is proposed but the design lacks SAR and flexibility analysis. A dual band and triband antenna for wearable applications is proposed in References 36‐38 but the design lacks compactness in terms of dimensions and thickness. For achieving multiple frequency spectrum numerous techniques such as Teflon based multilayer antenna, fractal shaped antenna and dipole shaped antennas is proposed in Reference 39‐41 but the design becomes thick and lacks compactness.…”

Section: Introductionmentioning

confidence: 99%

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Design of CPW fed multiband antenna for wearable wireless body area network applications

Dey

Mitra

Arif

2020

Int J RF Microw Comput Aided Eng

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This communication presents a multiband on-body conformal and wearable antenna for Wireless Body Area Network (WBAN) applications. The suggested wearable CPW-fed slot dipole antenna is incorporated with inductively coupled meander shape, T and O shaped resonators that lead to provide multiband operation. The resonant frequency is controlled by a definite resonant path, which leads to high degree of freedom in design paradigm. The proposed wearable antenna covers the 2.4 GHz/5.2 GHz/5.8 GHz WLAN, 3.5 GHz WiMAX, and 4.4 GHz C-bands and has an overall dimension of 60 × 40 × 0.254 mm 3. The SAR analysis has also been presented for the antenna at several resonant frequencies which are well under the normal SAR criteria of 1.6 W/kg that suggests that the model performs satisfactorily for wearable applications. To characterize the performance of the antenna, the specimen of the antenna is rigorously tested in terms of antenna gain, S-parameters and flexibility under different bending configurations for radii values ranging from 90 to 30 mm. The reflection coefficient of the suggested antenna is also evaluated and the outcomes are compared under distinct on-body circumstances. Measured and simulated results of S11, radiation pattern and gain are in good agreement.

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Multiband Flexible Antenna for Wearable Personal Communications

Cited by 21 publications

References 26 publications

A MIMO Transparent Antenna for FR1-5G Communications

A MIMO Transparent Antenna for FR1-5G Communications

Wireless Body Area Networks: UWB Wearable Textile Antenna for Telemedicine and Mobile Health Systems

Design of CPW fed multiband antenna for wearable wireless body area network applications

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