Wide‐bandwidth inverted‐F stub fed hybrid loop antenna for 5G sub‐6 GHz massive MIMO enabled handsets

Singh, Aditya; Saavedra, Carlos E.

doi:10.1049/iet-map.2019.0980

Cited by 14 publications

(9 citation statements)

References 19 publications

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“…The isolation mechanism mainly involves an FSS based analysis and approach to strengthen the isolation in this proximity system. Vertical strip rectangular chained strips, FSS employed meander line with spirals decoupling structure achieves overall isolation of not less than 20 dB and as high as 30 dB. Yet to improve and regain the impedance, DES is implemented as a parasitic structure.…”

Section: Discussionmentioning

confidence: 99%

A Compact 8-Element 3D UWB Diversity Antenna System for Off Device Installation

et al. 2021

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In this paper, an 8-element Ultra-wideband Multiple-Input-Multiple-Output (UWB-MIMO) antenna system is proposed. This MIMO system has novel miniaturized antenna elements that are evolved from a conventional monopole patch antenna. These antennas incorporate various impedance matching features including but are not limited to smoothly tapered fed lines, split and truncated ground configuration, semicircles arches, and inverted p-shaped slots. The antenna pairs are arranged in the cuboidal form to achieve a 3D-arrangement whereas customized decoupling structures achieve the desired isolation levels for three configurations including side-by-side, orthogonal, and across. These three distinct isolation mechanism offers isolation ranges from 20-30 dB for the proposed configurations. More importantly, a diamond eye structure (DES) as a parasitic element is also designed and optimized to improve the impedance matching owing to the lossy nature of isolation structures. The proposed antenna system has compact dimensions of 26.9 × 26 × 26.9 mm and its investigated MIMO performance proves its suitability for communication devices operating in the whole UWB spectrum of 3.1-10.6 GHz. INDEX TERMS Frequency selective surfaces (FSS), Multiple-input-multiple-output (MIMO), Mutual coupling, Ultra-Wideband (UWB) antennas.

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Section: Discussionmentioning

confidence: 99%

A Compact 8-Element 3D UWB Diversity Antenna System for Off Device Installation

et al. 2021

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“…Ref. [12], proposes a massive MIMO-enabled antenna terminal for future 5G communications. It houses ten identical antennas, where each antenna is a slot on the ground plane fed with an inverted-F stub (IFS) feed on the top plane.…”

Section: Introductionmentioning

confidence: 99%

Ten Port and Fourteen Port MIMO Arrays for 5G Smart Phone Applications in a Sub 6 GHz band

Zewail

Abouelnaga²,

Shokair³

2022

Menoufia Journal of Electronic Engineering Research

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In this paper, two designs of ten port and fourteen port Massive Multiple-Input-Multiple-Output (MIMO) arrays are proposed for the Fifth Generation (5G) cellphone applications. A dual-band ring loop antenna is proposed to cover the LTE band 42 (3.4 -3.6 GHz), LTE band 43 (3.6 -3.8 GHz), and LTE band 46 (5.15 -5.925 GHz). The proposed arrays are designed with changing the battery position and exploiting the space to add more antennas. Also, better isolation may be achieved concerning the use of spatial diversity methods on the antenna components. To achieve higher isolation, the substrate is formed as the loop antenna elements are printed on a separated dodecagon FR4 substrate with different orientation angles. The proposed designs achieve isolation better than -26 dB. Envelope Correlation Coefficient (ECC) based on S-parameters is found to be better than 0.005 in LTE band 42/43 and 0.006 in LTE band 46. Also, the ECC is calculated based on far-field radiation patterns and is found to be less than 0.2 in LTE band 42/43 and less than 0.12 in LTE band 46. The channel capacities are attained, the 10 × 10 MIMO achieve 57.6 bps/Hz, and the 14 × 14 MIMO achieve 72 bps/Hz. Additionally, The Specific Absorption Rate (SAR), Diversity Gain (DG), and the effect of frame insertion on the proposed array are also discussed.

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“…This issue is now the hotspot of research in the field of wireless communications. Further, the channel capacity and spectrum efficiency can be effectively increased by using massive MIMO techniques [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Design of 10 × 10 Massive Mimo Array in Sub-6 GHZ Smart Phone for 5g Applications

Abouelnaga¹,

Zewail²,

Shokair³

2021

PIER B

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In this paper, a design of a dual-band 10 × 10 antenna array for 5G Massive Multi-Input Multi-Output (MIMO) applications in the mobile phone is presented. The designed array is proposed to cover the sub-6 GHz bands (LTE bands 42/43 and LTE band 46). To realize MIMO operation in these three LTE bands, ten ring loop antenna elements are integrated into a limited space cell phone circuit board. Due to the implementation of spatial diversity techniques on the antenna elements, better isolation can be achieved. The proposed array was simulated, fabricated, and measured. It achieved good MIMO performances, such as ergodic channel capacities higher than 27.1 bps/Hz and 57.6 bps/Hz for LTE bands 42/43 and LTE band 46, respectively. Also, the achieved Envelope Correlation Coefficient (ECC) is lower than 0.006. Moreover, it exhibited good isolation below −26 dB. The effects of the user's hand phantom on the proposed array performance are also studied in two scenarios: Single Hand Mode (SHM) and Dual Hands Mode (DHM). The simulated results indicate that the proposed MIMO array can still achieve good MIMO performances in the presence of DHM and SHM. The Specific Absorption Rate (SAR) is also presented.

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Wide‐bandwidth inverted‐F stub fed hybrid loop antenna for 5G sub‐6 GHz massive MIMO enabled handsets

Cited by 14 publications

References 19 publications

A Compact 8-Element 3D UWB Diversity Antenna System for Off Device Installation

A Compact 8-Element 3D UWB Diversity Antenna System for Off Device Installation

Ten Port and Fourteen Port MIMO Arrays for 5G Smart Phone Applications in a Sub 6 GHz band

Design of 10 × 10 Massive Mimo Array in Sub-6 GHZ Smart Phone for 5g Applications

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