Dual-Band MIMO Antenna for 5G/WLAN Mobile Terminals

Huang, Jianlin; Dong, Guiting; Cai, Qibo; Chen, Zhizhou; Li, Limin; Liu, Gui

doi:10.3390/mi12050489

Cited by 31 publications

(17 citation statements)

References 22 publications

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“…A novel slot-array DGS for decoupling microstrip antenna array is proposed in [26], where the highest isolation is achieved by applying the slot-array DGS when the edge-to-edge spacing between circularly polarized (CP) antenna elements is 0.057 wavelength. In addition, dual-band MIMO antennas with high isolation have been recently reported for 5G/WLAN smartphone applications [27].…”

Section: Introductionmentioning

confidence: 99%

A New Compact Dual-Polarized MIMO Antenna Using Slot and Parasitic Element Decoupling for 5G and WLAN Applications

2022

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This paper presents a compact dual-polarized multiple-input multiple-output (MIMO) antenna for fifth generation (5G) and wireless local area network (WLAN) applications. At first, a compact two-element dual-polarized MIMO antenna designed to operate at 3.5 GHz was developed. After that, some modifications were performed in the initial configuration, and a compact two-element dual-polarized MIMO was designed to operate at 3.5 and 5.35 GHz. A simple decoupling technique using parasitic element and slot was used to enhance the isolation between the radiating elements and to achieve an isolation above 18 dB over the band ranging from 3.4 to 3.6 GHz for the first antenna, and to achieve isolations above 19.8 dB over the first band ranging from 3.4 to 3.6 GHz and above 16.75 dB over the second band ranging from 5.15 to 5.85 GHz for the second antenna. Simulations were performed in the Ansoft HFSS software for numerical characterization and the prototype was fabricated with FR-4 dielectric and measured, presenting a good agreement between simulated and measured results. Furthermore, the envelope correlation coefficient (ECC) and the diversity gain (DG) were analyzed and present good results.

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Section: Introductionmentioning

confidence: 99%

A New Compact Dual-Polarized MIMO Antenna Using Slot and Parasitic Element Decoupling for 5G and WLAN Applications

2022

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“…However, with the limited internal space of the universal smartphones, the number of antenna elements will be influenced. In order to solve this problem, each antenna element should be minimized [1][2][3][4], and operate at dual-band [5][6][7][8][9][10][11][12] or broadband [13][14][15][16][17]. By sharing a common grounding branch for the two adjacent antenna elements, a compact self-decoupled antenna pair was obtained in [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…By using a multi-slot decoupling technique, a dual-band eight-element antenna array is proposed in [5,12]. A single antenna element consisting of two radiators was presented for dual-band operation [6]. A folded monopole and a gap-coupled loop branch were combined together to obtain two broad bands [7].…”

Section: Introductionmentioning

confidence: 99%

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Minimized Triple-Band Eight-Element Antenna Array for 5G Metal-frame Smartphone Applications

et al. 2022

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A multiple-input-multiple-output (MIMO) antenna array for triple-band 5G metal-frame smartphone applications is proposed in this paper. Each single antenna element consists of an S-shaped feeding strip and an L-shaped radiation strip on the metal frame. The dimension of the antenna element is only 6.5 mm × 7 mm (0.076 λ0 × 0.082 λ0, λ0 is the free-space wavelength at the frequency of 3.5 GHz). The −6 dB impedance bandwidth of the proposed eight-antenna array can cover 3.3–3.8 GHz, 4.8–5 GHz, and 5.15–5.925 GHz. The evolution design and the analysis of the optimal parameters for a single antenna element are derived to investigate the principle of the antenna. The measured total efficiency is larger than 70%. The measured isolation is better than 13 dB. The measurements of the prototype agree well with the simulation results.

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“…However, this will inevitably lead to a large occupied area. Within the occupied area, many methods to minimize mutual coupling have been proposed, such as the employment of band gap structures [5], decoupling networks [6,7], neutralization lines [8], defected ground structures [9] and parasitic elements [10]. These technologies reduce the coupling by minimizing, attenuating and blocking the surface currents [11].…”

Section: Introductionmentioning

confidence: 99%

A MIMO Antenna with High Gain and Enhanced Isolation for WLAN Applications

et al. 2022

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In this paper, a novel two-port dual-band multiple-input-multiple-output (MIMO) antenna with enhanced isolation and high gain is presented. The presented antenna is composed of a symmetrical ground element and two identical antenna radiating elements. At the bottom of the substrate, the ground part is applied to strengthen the isolation performance of the designed MIMO antenna. The measured −10 dB bandwidth according to the input reflection coefficient S11 are 650 MHz (2.25–2.9 GHz) and 980 MHz (5.05–6.03 GHz), which are in strong agreement with the 2.4 GHz frequency band (2.4–2.4835 GHz) and the 5 GHz frequency band (5.15–5.85 GHz) of wireless local area network (WLAN) applications. The measured S21 at both the lower and the higher frequency operation bands are less than −19.3 dB. In the operating frequency bands, the measured gain is from 1.5 dBi to 3.8 dBi. The measured results show that the presented MIMO antenna is a good candidate for WLAN applications.

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Dual-Band MIMO Antenna for 5G/WLAN Mobile Terminals

Cited by 31 publications

References 22 publications

A New Compact Dual-Polarized MIMO Antenna Using Slot and Parasitic Element Decoupling for 5G and WLAN Applications

A New Compact Dual-Polarized MIMO Antenna Using Slot and Parasitic Element Decoupling for 5G and WLAN Applications

Minimized Triple-Band Eight-Element Antenna Array for 5G Metal-frame Smartphone Applications

A MIMO Antenna with High Gain and Enhanced Isolation for WLAN Applications

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