A Flexible Multiband Antenna for Biomedical Telemetry

Al‐Sehemi, Abdullah G.; Al-Ghamdi, Ahmed A.; Dishovsky, Nikolay; Atanasova, Gabriela; Atanasov, Nikolay

doi:10.1080/03772063.2020.1808536

Cited by 11 publications

(9 citation statements)

References 27 publications

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“…Although, it has the narrow operating bandwidth, outnumbers 6,9,13,20 at the first resonating band. Further, compared to the other antennas except, 22,28 the proposed antenna has a very low metallic foot-print on the substrate as shown in column VI which is needed for the flexible conformal antenna design. Although 22 has a better metallic footprint but operates over the single band.…”

Section: State Of the Art Comparisonmentioning

confidence: 99%

“…Although 22 has a better metallic footprint but operates over the single band. Similarly, the antenna in 28 suffers from poor gain and the use of the rubber substrate prohibits its utility in numerous applications.…”

Section: State Of the Art Comparisonmentioning

confidence: 99%

“…However, the antenna uses the high permittivity rubber substrate, which limits the electrical characteristic, and offers a À4.5 dBi peak realized gain. 28 In another body-centric application, quadruple loop antennas to operate at GSM 0.900 GHz, GSM 1.800 GHz, and 2.4 GHz Bluetooth low energy (BLE) is reported in Ref. 29.…”

Section: Introductionmentioning

confidence: 99%

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Nearly omni‐directional compressed multiband flexible and conformal dipole antenna

Singh

Jha

Sharma

2021

Int J RF Mic Comp-Aid Eng

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A physically compressed, multiband dipole antenna on a partially optically transparent Acrylic sheet flexible substrate material is designed. The multiband operation is achieved by exploiting the higher-order resonating modes.Due to the use of the flexible substrate, and the less metallic footprint of the radiator, the antenna is flexible and conformal with the nearly omnidirectional radiation characteristic in one of the principal plane. With an S 11 = À10 dB impedance matching criterion, the antenna has a measured 0.76 to 0.85 GHz, 2.39 to 2.50 GHz, 2.83 to 2.88 GHz, and 6.09 to 6.5 GHz operating bandwidth.It also has a wide À6 dB measured impedance bandwidth from 0.74 to 0.87 GHz, 2.12 to 2.19 GHz, 2.32 to 2.52 GHz, 2.70 to 3.0 GHz, and 5.9 to 6.7 GHz. The specific absorption ratio (SAR) of the conformal antenna has been studied for the collar garment applications. The planar and conformal antennas have been fabricated and investigated for the nearly-omnidirectional radiation pattern. The simulated and measured radiation pattern shows the nearly omnidirectional pattern for a different radius of curvature. The simulated and measured results are in agreement with each other with a few exceptions. The antenna is suitable for the internet of things (IoT), body area networking (BAN), wireless fidelity (Wi-Fi), and smart city applications.

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Section: State Of the Art Comparisonmentioning

confidence: 99%

Section: State Of the Art Comparisonmentioning

confidence: 99%

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Nearly omni‐directional compressed multiband flexible and conformal dipole antenna

Singh

Jha

Sharma

2021

Int J RF Mic Comp-Aid Eng

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“…Where Lg is the length and Wg the width of the ground patch. The impedance value of the rectangular microstrip patch ( ) is calculated by (7).…”

Section: Basic Design Parametersmentioning

confidence: 99%

“…The substrate of the microstrip antennas is used to provide mechanical support and suitable gate between patch and ground plane. If the antenna is planned to be used on a variable shaped structure, either the antenna substrate is produced to fit the shape [5] or a flexible substrate produced from flexible materials is used [6,7].The microstrip patch antennas on the flexible substrates have been widely used in industrial, scientific and biomedical applications. Since the produced antennas need to be flexible and be suitable for bends, it is desired to make the substrate layer as thin as possible to allow better flexibility.…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach for Production Challenges of Flexible Microstrip Patch Antenna

Polat

2019

BEN

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It is unavoidable to decrease the thickness of the substrate in order to obtain enough flexibility. Decreasing the height of the substrate lowers the gain of antenna and its bandwidth. Thus, it is challenging to provide operability for the flexible materials and it requires new approaches. This paper is shown that the using nano silver paste for the designed antenna causes better return loss rates (S11) and bandwidth. Also, the effect of sintering temperatures on the response of the antenna is analyzed for the range of 150 ° C to 350 ° C. The highest resonance frequency and the lowest return loss are observed at 350 ° C in this range. The SEM images of the antenna surfaces show that the nanoparticles in the paste group together with increasing sintering temperatures. When compared to the perfect conductor silver, better return loss and bandwidth are obtained.

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