MIMO Antenna With Compact Decoupled Antenna Pairs for 5G Mobile Terminals

Ren, Zhouyou; Zhao, Anping; Wu, Shengde

doi:10.1109/lawp.2019.2916738

Cited by 176 publications

(127 citation statements)

References 24 publications

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“…e table shows that this work fairs well compared with other works in terms of total efficiency. Although [11,13,17] report better efficiencies, they operate in a higher frequency band, where antenna sizes are smaller, and mutual coupling is therefore less of a problem.…”

Section: Measurementsmentioning

confidence: 99%

“…One example of such a solution is the design of a single antenna element with inherently low mutual coupling to other elements [11]. Other examples include use of parasitic metal strips [12,13], neutralization lines [14], and lumped elements [15] between antennas as decoupling structures. e parasitic structures aim to decrease coupling by controlling the EM fields, whereas neutralization lines or lumped elements provide an alternate current path between antennas to cancel coupling.…”

Section: Introductionmentioning

confidence: 99%

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A Lumped-Element Decoupling and Matching Network for a Four-Element Mobile Handset MIMO Antenna

Kormilainen

Luomaniemi

Lehtovuori

et al. 2019

International Journal of Antennas and Propagation

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This paper presents the first realization of a lumped-element decoupling and matching network (DMN) for more than two-element mobile MIMO arrays. The realization of the DMN is based on an existing method, which is improved in terms of bandwidth and the number of network elements. The array is designed to operate in the 2.6–2.7 GHz LTE band. The DMN is applied to a four-element MIMO antenna array located on one side of the mobile phone chassis. The array initially has a strong coupling of −3 dB, which is improved to −7 dB with the DMN. In other words, this denotes a reduction of 30 percentage points in coupled power. The DMN also improves the total efficiency by 21 percentage points at best.

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Section: Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Lumped-Element Decoupling and Matching Network for a Four-Element Mobile Handset MIMO Antenna

Kormilainen

Luomaniemi

Lehtovuori

et al. 2019

International Journal of Antennas and Propagation

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“…Several countries specify the spectrum for Sub-6 GHz for 5G, which includes 2.5-2.6 GHz, 3.3-3.8 GHz, 4.5-5 GHz, and 3.8-4.2 GHz frequency bands [1]. Multiple-Input and Multiple-Output (MIMO) antennas operating either in Sub-6 GHz or antenna array in mm wave are used for receiving and sending many data signals instantaneously over the same radio channel [2][3][4][5][6]. MIMO system is very attractive for future 5G communication.…”

Section: Introductionmentioning

confidence: 99%

“…Circular polarization (CP) reduces both polarization loss and multipath interference, which is needed for high-speed data transmission and reception. In the past, several MIMO antennas were proposed for 5G application [2][3][4][5][6], 5G mobile MIMO antenna with null points of E-field to decouple the different inverted F antenna elements [2], 4-antenna MIMO system based on compact self-decoupled antenna pairs for 5G [3], dual-band MIMO antenna for 5G application [4], and Ground mode tuning (GMT) for the generation of CP [5]. 8-antenna MIMO system without any isolation elements or decoupling techniques were used [6], and a four-port MIMO antenna with a built-in circular-shaped isolator was proposed for Sub-6 GHz applications [7].…”

Section: Introductionmentioning

confidence: 99%

Pattern Diversity Mimo 4g and 5g Wideband Circularly Polarized Antenna With Integrated Lte Band for Mobile Handset

Chaudhary¹,

Kumar²,

Yadav³

2020

PIER M

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The present work describes a unique planar wideband circularly polarized MIMO antenna for 4G and Sub-6 5G band (1.35-2.75 GHz), with pattern diversity over the entire axial-ratio bandwidth. The design consists of two tri-branch planar inverted-F antenna (PIFA) antennas with a ground T-stub between the antennas, which is used to realize circular polarization and high isolation. The third antenna is an integrated Sub-6 5G (4.45-4.7 GHz) and LTE band (786.7-807.7 MHz) antenna, which is folded above the ground and placed vertically around the side. It also provides circular polarization at LTE band. The 3 dB axial ratio bandwidth (ARBW) of the MIMO antenna is 1.08 GHz (1.47-2.55 GHz); impedance matching bandwidth (IMBW) is 1.4 GHz (1.35-2.75 GHz); and its isolation is better than 13.4 dB in the whole band. It is fabricated on an FR-4 substrate and is suitable for mobile handset.

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“…With the high requirement for high data rates and large channel capacity, the expectations for modern wireless communication systems are ratcheted up. The fifth generation (5G) communication is considered a prospective option to meet the demand for explosive growth of data rate and super high channel capacity, which is developing rapidly [1,2]. However, limited spectral resources will be a bottleneck in the development of modern wireless communication in the near future.…”

Section: Introductionmentioning

confidence: 99%

Flexibly Extensible Planar Self-Isolated Wideband MIMO Antenna for 5G Communications

Wei

Tan

et al. 2019

Electronics

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A planar flexibly extensible multiple-input–multiple-output (MIMO) antenna array with a self-isolation property is proposed. The main characteristics of the proposed array are: (i) no extra isolation structure is required to improve isolation between elements; (ii) elements are arranged with each other with a spacing of 0 mm, (iii) the configuration can be flexibly extended to a large antenna array according to actual requirements. For a test example, the practical processing and testing of an eight-element array is conducted. The tested results demonstrate that the proposed design possesses wide impedance bandwidth (IBW) of 65% and very good isolation (＞18 dB) across the operating bandwidth, which match well with the simulated ones. Moreover, envelope correlation coefficient (ECC) is calculated to valuate MIMO performance; an acceptable ECC (lower than 0.05) suggests that the proposed configuration has good diversity performance and can be a potential candidate for MIMO communications.

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MIMO Antenna With Compact Decoupled Antenna Pairs for 5G Mobile Terminals

Cited by 176 publications

References 24 publications

A Lumped-Element Decoupling and Matching Network for a Four-Element Mobile Handset MIMO Antenna

A Lumped-Element Decoupling and Matching Network for a Four-Element Mobile Handset MIMO Antenna

Pattern Diversity Mimo 4g and 5g Wideband Circularly Polarized Antenna With Integrated Lte Band for Mobile Handset

Flexibly Extensible Planar Self-Isolated Wideband MIMO Antenna for 5G Communications

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