Isolation improvement of dual-/quad-element textile MIMO antenna for 5G application

Roy, Sourav; Biswas, Ashim Kumar; Ghosh, Soumendu; Chakraborty, Ujjal; Sarkhel, Abhishek

doi:10.1080/09205071.2021.1888808

Cited by 20 publications

(13 citation statements)

References 20 publications

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“…In recent years, a significant process has been noticed in the design aspects of planar MIMO antennas due to the endless efforts of the antenna designers. Several antenna structures have been reported by using various design approaches, namely, neutralization line technique and metamaterial loaded low mutual coupling array antenna, 1 defected ground structure based UWB MIMO system, 2 double‐sided MIMO antenna with symmetrical circular type elements include slotted ground plane, 3 asymmetrical coplanar strip (ACSP) wall loaded low mutual coupling two‐closely spaced microstrip antenna, 4 two elements MIMO antenna with improved isolation, 5 a kotch fractal MIMO antenna with rejection of WLAN band, 6 defected ground structure based edge truncated square patch MIMO antenna for interference inherent UWB systems, 7 modified circular shape MIMO antenna using diagonal parasitic elements, 8 inverted L‐monopole antenna elements with interconnected ground plane arrangement of four port MIMO antenna, 9 inverted L‐shape as well as ohm symbol shaped slot incorporated MIMO antenna with reduced mutual coupling, 10 simple radiation patch with grounded coplanar waveguide with conductive elements feed line MIMO antenna improved isolation, 11 UWB MIMO antenna with slotted ground plane for enhancement of isolation capability, 12 compact MIMO antenna have reduced ground plane for mutual coupling reduction, 13 parasitic element incorporated dual‐polarized MIMO antenna for LTE and Wi‐Fi systems, 14 F‐shaped type stubs loaded UWB‐MIMO structure, 15 split ring resonator loaded monopole four element MIMO antenna, 16 multiple slots and stepped ground loaded four port MIMO antenna, 17 MIMO antenna with L‐shaped patches embedded with T‐bar shaped parasitic structure, 18 3‐D meta material loaded MIMO system, 19 meander line inserted structure integrated textile MIMO system for 5G, 20 MIMO antenna arrangement with circular, semi‐circular related shaped type slots loaded patches and cross‐shaped type ground plane, 21 multiple square parasitic elements based MIMO antenna for isolation improvement, 22 dual‐band array by employing meta‐surfaces for mutual coupling improvement, 23 multi‐band minkowski fractal MIMO antenna for isolation enhancement, 24 and cavity backed structure annular patch for multi‐polarization systems 25 . Researchers, designers, and engineers are working rigorously to design efficient antennas for providing the best possible smart solutions for modern emerging wireless communication applications by using advanced electromagnetic simulation tools.…”

Section: Introductionmentioning

confidence: 99%

Broadband sub‐6 GHz flower‐shaped MIMO antenna with high isolation using theory of characteristic mode analysis (TCMA) for 5G NR bands and WLAN applications

Babu¹,

Das²,

Ali

et al. 2023

Int J Communication

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A small size neutralization line integrated flower-shaped MIMO antenna is designed and analyzed for sub-6 GHz type 5G NR frequency bands like n79 (4400-5000 MHz), n78 (3300-3800 MHz), n77 (3300-4200 MHz), and WLAN (5150-5825 MHz) applications. The novel approach of theory of characteristic mode analysis (TCMA) is introduced to provide physical insight of the designed structure and its characteristics behavior. Due to the suggested modifications in the geometry, the isolation among the patches is greatly increased.The overall miniaturized dimension of the MIMO antenna is 25 Â 40 mm 2 . The edge-edge spacing among the elements is 0.0233λ. The prototype antenna is fabricated and measured that shows good agreement compared with simulated results. The designed MIMO antenna without the presence of decoupling structure offers an isolation of 28 dB, gain of 3.6 dBi, and radiation efficiency of 69.7% at the resonant frequency. The proposed MIMO antenna covers a broad range of frequency band from 3.296 to 5.962 GHz with À10 dB impedance bandwidth of 2666 MHz and maintains a good isolation of greater than 50 dB for the entire operating band. The tested radiation efficiency and gain are 85.3% and 6.22 dBi at 3.5 GHz. Moreover, the diversity parameters of the neutralization line integrated MIMO antenna, that is, channel capacity loss (CCL) isolation, mean effective gain (MEG), total active reflection coefficient (TARC) diversity gain (DG), and envelope correlation coefficient (ECC), are analyzed and discussed in this article.

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Section: Introductionmentioning

confidence: 99%

Broadband sub‐6 GHz flower‐shaped MIMO antenna with high isolation using theory of characteristic mode analysis (TCMA) for 5G NR bands and WLAN applications

Babu¹,

Das²,

Ali

et al. 2023

Int J Communication

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“…A four ports MIMO antenna was designed on textile for 5G communication to improve the isolation. However, the dimensions were increased to do so [ 40 ]. In addition, a two-port flexible MIMO antenna with the defected ground was designed for the ISM band to improve the isolation [ 41 ].…”

Section: Introductionmentioning

confidence: 99%

A Miniaturized Full-Ground Dual-Band MIMO Spiral Button Wearable Antenna for 5G and Sub-6 GHz Communications

Saeidi

Al-Gburi

Karamzadeh

2023

Sensors

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A detachable miniaturized three-element spirals radiator button antenna integrated with a compact leaky-wave wearable antenna forming a dual-band three-port antenna is proposed. The leaky-wave antenna is fabricated on a denim (εr = 1.6, tan δ = 0.006) textile substrate with dimensions of 0.37 λ0 × 0.25 λ0 × 0.01 λ0 mm3 and a detachable rigid button of 20 mm diameter (on a PTFE substrate εr = 2.01, tan δ = 0.001). It augments users’ comfort, making it one of the smallest to date in the literature. The designed antenna, with 3.25 to 3.65 GHz and 5.4 to 5.85 GHz operational bands, covers the wireless local area network (WLAN) frequency (5.1–5.5 GHz), the fifth-generation (5G) communication band. Low mutual coupling between the ports and the button antenna elements ensures high diversity performance. The performance of the specific absorption rate (SAR) and the envelope correlation coefficient (ECC) are also examined. The simulation and measurement findings agree well. Low SAR, <−0.05 of LCC, more than 9.5 dBi diversity gain, dual polarization, and strong isolation between every two ports all point to the proposed antenna being an ideal option for use as a MIMO antenna for communications.

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“…Due to their small size, light weight, and bending capacity, flexible antennas have been widely used in wireless body area network IoT applications and other domains [5][6][7][8]. There have been a number of proposals for MIMO antennas utilizing flexible materials [9][10][11][12][13][14][15][16][17]. In [9], a UWB MIMO antenna is demonstrated integrating with DGS based on the jeans working in UWB and WLAN with excellent isolation of 32 dB.…”

Section: Introductionmentioning

confidence: 99%

A CPW-fed dual band four-port MIMO antenna based on liquid crystal polymer for flexible IoT applications

Zhang

Pei

et al. 2023

Int. J. Microw. Wireless Technol.

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A 2 × 2 dual band MIMO flexible antenna with a low profile and CPW feeding is designed for Internet of Things (IoT) domains, operating in 5G (3.3–3.6/4.8–5.0 GHz), WiMAX (5.25–5.85 GHz) and WLAN (5.15–5.35/5.725–5.825 GHz) bands. Two resonant frequencies are generated by L-shaped branches and a rectangular monopole. The mentioned MIMO antenna comprises four elements arranged vertically. With the addition of an orthogonal branch, significant isolation is attained, which exceeds 21 dB in the entire bands. The four-element MIMO antenna is fabricated and experimented to analyze the performance. According to the measurement, the antenna can operate bandwidth covering 3.156–3.84 GHz (19.55%) and 4.638–6.348 GHz (31.13%). Furthermore, the provided four-element MIMO antenna possesses a number of advantageous properties, such as ECC, DG, and TARC, indicating its suitability for 5G/WiMAX/WLAN applications. In accordance with the results of bending measurement and human body influence, it is evident that the presented liquid crystal polymer antenna could be an ideal candidate for integrating into wearable 5G/WiMAX/WLAN devices.

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Isolation improvement of dual-/quad-element textile MIMO antenna for 5G application

Cited by 20 publications

References 20 publications

Broadband sub‐6 GHz flower‐shaped MIMO antenna with high isolation using theory of characteristic mode analysis (TCMA) for 5G NR bands and WLAN applications

Broadband sub‐6 GHz flower‐shaped MIMO antenna with high isolation using theory of characteristic mode analysis (TCMA) for 5G NR bands and WLAN applications

A Miniaturized Full-Ground Dual-Band MIMO Spiral Button Wearable Antenna for 5G and Sub-6 GHz Communications

A CPW-fed dual band four-port MIMO antenna based on liquid crystal polymer for flexible IoT applications

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