Reconfigurable wide band wearable multiple input multiple output antenna with hanging resonator

Biswas, Ashim Kumar; Chakraborty, Ujjal

doi:10.1002/mop.32151

Cited by 13 publications

(16 citation statements)

References 19 publications

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“…To ensure high channel capacity, the achieved CCL of the MIMO should be as low as possible. The standard CCL value of the MIMO antenna lies within 0.4 (bits/s/Hz) 28 . Figure 4B also depicts the CCL with the variation of frequency.…”

Section: Resultsmentioning

confidence: 90%

“…It describes the capacity of the channel in the MIMO system. CCL for the proposed prototype is evaluated from the measured S‐parameters using the following Equation , 28

italicCCL ((), loss) = - \log_{2} \det ((), {normalΨ}^{R}) .

…”

Section: Resultsmentioning

confidence: 99%

“…The surrounding consequence is comprehended with this factor. We have calculated the MEG for both the ports using the relation given in Equation 7 28 :

{MEG}_{m} = 0.5 η_{normalm, rad} = 0.5 ((), 1 - \sum_{n = 1}^{P} {|S_{mn}|}^{2}) .

…”

Section: Resultsmentioning

confidence: 99%

“…The standard CCL value of the MIMO antenna lies within 0.4 (bits/s/Hz). 28 Figure 4B also depicts the CCL with the variation of frequency. A very low value of CCL (<0.22 bits/s/Hz) is perceived over the entire triple bands offered by the proposed antenna.…”

Section: Dgmentioning

confidence: 99%

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Compact MIMO antenna with high port isolation for triple‐band applications designed on a biomass material manufactured with coconut husk

Biswas

Swarnakar

Pattanayak

et al. 2020

Micro & Optical Tech Letters

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A compact two-element multiple-input multiple-output (MIMO) antenna is proposed for triple-band applications with very high port isolation. The structure is constructed in-house with a flexible biomass material which is coconut husk. Two metallic "8"-shaped antenna structures are employed manually on the substrate to serve as MIMO elements. Frequency bands of the antenna for (S 11 ≤ −10 dB) are obtained from 2.04 to 2.51 GHz, 4.43 to 5.35 GHz, and 6.76 to 8.78 GHz. The antenna fulfills the wireless local area network (WLAN) (2.4-2.485/5.15-5.35 GHz), fixed-mobile (4.45-5.15 GHz), and International telecommunication union (ITU) (8-8.5 GHz) application bands. A stub with three subsections is integrated in the ground to improve the overall triple-band port isolation characteristics. It is found that the minimum port isolation for entire application bands is greater than 20 dB. This low correlation between the elements is further confirmed by low value of envelope correlation coefficient (ECC < 0.14) and high value of diversity gain (DG > 9.98 dB). Channel capacity loss (CCL < 0.22 bit/s/Hz) and mean effective gain (MEG = ±0.19 dB) are also found within acceptable ranges. Characterization of the substrate material of the proposed MIMO antenna is rigorously investigated by analyzing its dielectric constant and loss tangent. Simulated and measured results ratify that the antenna is fit for triple-band MIMO applications.

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Section: Resultsmentioning

confidence: 90%

“…It describes the capacity of the channel in the MIMO system. CCL for the proposed prototype is evaluated from the measured S‐parameters using the following Equation , 28

italicCCL ((), loss) = - \log_{2} \det ((), {normalΨ}^{R}) .

…”

Section: Resultsmentioning

confidence: 99%

“…The surrounding consequence is comprehended with this factor. We have calculated the MEG for both the ports using the relation given in Equation 7 28 :

{MEG}_{m} = 0.5 η_{normalm, rad} = 0.5 ((), 1 - \sum_{n = 1}^{P} {|S_{mn}|}^{2}) .

…”

Section: Resultsmentioning

confidence: 99%

Section: Dgmentioning

confidence: 99%

See 2 more Smart Citations

Compact MIMO antenna with high port isolation for triple‐band applications designed on a biomass material manufactured with coconut husk

Biswas

Swarnakar

Pattanayak

et al. 2020

Micro & Optical Tech Letters

Self Cite

View full text Add to dashboard Cite

show abstract

“…It can be tuned from 4.67 to 5.84 GHz using four varactor diodes. In Reference 19, a reconfigurable wearable MIMO antenna is reported. It operates in two states: in the first state, the antenna covers the frequency band from 3.11 to 5.15 GHz, and in the second state, it covers the frequency band from 4.81 to 7.39 GHz.…”

Section: Introductionmentioning

confidence: 99%

Varactor diode‐baseddual‐bandfrequency tunable multiple‐input multiple‐output antenna

Smida

Iqbal

Selmi

et al. 2020

Int J RF Microw Comput Aided Eng

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A microstrip feed line-based continuous frequency-tunable dual-band multiple-input multiple-output (MIMO) antenna is proposed in this article. The proposed antenna comprises four hook-shaped radiators placed orthogonally to one another. The overall dimensions of the antenna are 45 × 45 × 1.6 mm 3 (0.77λ g × 0.77λ g × 0.027λ g [where λ g is the guided wavelength at the lower tunable resonant frequency]). The proposed antenna operates at dual-band, while tunability in the resonant frequencies is achieved by connecting varactor diodes with the radiating patches. The lower resonant band of the antenna can be tuned from 2.45 to 2.83 GHz (with the isolation of more than 17 dB in the whole operating band) and the upper frequency band is tunable from 5.14 to 6.3 GHz (with the isolation of more than 22 dB in the whole operating band). The properties of the antenna such as reflection coefficients, mutual couplings, radiation patterns, channel capacity losses, and multiplexing efficiencies are verified by measuring the fabricated prototype. The envelope correlation coefficient of the antenna is <0.11 for the lower frequency band and is <0.16 for the higher frequency band for all tuning cases. The proposed antenna is suitable for use in compact multiband MIMO applications because of its small size, dual-band characteristics, continuous frequency tuning capability, and good MIMO parameters.

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Ground plane design configuration estimation of 4.9 GHz reconfigurable monopole antenna for desired radiation features using artificial neural network

Alkurt

Ozdemir

Akgöl

et al. 2021

Int J RF Mic Comp-Aid Eng

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This paper presents a system based on artificial neural network (ANN) that predicts ground plane design for desired radiation properties of a monopole antenna with operation band of 4.8 to 5 GHz. The operating frequency can be adapted to any other frequency regimes. Initially, a 180 Â 180 mm2 ground plane, which is composed of a copper layer, is designed and integrated to a radiative pole that creates monopole antenna configuration. The ground plane is divided into 18 rows and 18 columns as 18 Â 18 matrix so that each unit cell has a square shape having 10 mm side length. Moreover, 152 different ground plane configurations are created by using logic 1 s and 0 s. Multi-layered feed forward ANN is used along with Scale Conjugate Gradient learning algorithm to design ground plane of the monopole antenna. Simulated 152 random ground plane arrays and obtained radiation patterns are used to train ANN for the ground plane design. If a user wants to manipulate radiation, artificial neural network gives the optimum ground plane design for the desired radiation direction and gain with 91.03% accuracy. Finally, one test antenna is fabricated and experimentally measured to support the results of the simulated one. The proposed ANN model approach can be easily used for antenna applications in the antenna industry. K E Y W O R D Santenna design, artificial neural network, monopole antenna, optimized ground plane | INTRODUCTIONRecently, artificial neural networks (ANN) have become very interesting in all areas of engineering applications [1][2][3][4] especially in antenna engineering. [5][6][7][8][9][10] Applications towards to the design parameter estimations of circular patch antennas with the help of ANN algorithms were presented by researchers, 5,6 and also modeling and designs of slotted fractal antenna and Wi-Fi antenna were investigated by using ANNs. 7,8 Moreover, Neebha

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Reconfigurable wide band wearable multiple input multiple output antenna with hanging resonator

Cited by 13 publications

References 19 publications

Compact MIMO antenna with high port isolation for triple‐band applications designed on a biomass material manufactured with coconut husk

Compact MIMO antenna with high port isolation for triple‐band applications designed on a biomass material manufactured with coconut husk

Varactor diode‐baseddual‐bandfrequency tunable multiple‐input multiple‐output antenna

Ground plane design configuration estimation of 4.9 GHz reconfigurable monopole antenna for desired radiation features using artificial neural network

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