Dual-Band Eight-Antenna Array Design for MIMO Applications in 5G Mobile Terminals

Li, Jianxing; Zhang, Xiaoke; Wang, Zhi; Chen, Xiaoming; Chen, Juan; Li, Yingsong; Zhang, Anxue

doi:10.1109/access.2019.2908969

Cited by 148 publications

(111 citation statements)

References 19 publications

Supporting

Mentioning

108

Contrasting

Order By: Relevance

“…First, we observed the energy ( d j,m (c) 2 ) of the sub-carriers in the CSI of received data and defined the thresholds optimized for each SNR (signal to noise ratio) through simulation. Only subcarriers whose energy exceeded the thresholds was used for Euclidean distance calculation as in the following Equations (13) and (14).…”

Section: Set Methodsmentioning

confidence: 99%

“…We simulated the case where the antenna of the reader is 1, 2, 4, and 8. Currently, the number of antennas supported in mobile terminals is up to four and research on 8-and 12-antennas array is actively ongoing [14,15]. However, because there were no basic results depending on the number of antennas simulation for eight antennas is performed.…”

Section: Performance and Computational Complexity Of The Low Compleximentioning

confidence: 99%

See 1 more Smart Citation

Wi-Fi Backscatter System with Tag Sensors Using Multi-Antennas for Increased Data Rate and Reliability

Kim

Park

Jung

et al. 2020

Sensors

View full text Add to dashboard Cite

In this paper, we propose tag sensor using multi-antennas in a Wi-Fi backscatter system, which results in an improved data rate or reliability of the signal transmitted from a tag sensor to a reader. The existing power level modulation method, which is proposed to improve data rate in a Wi-Fi backscatter system, has low reliability due to the reduced distance between symbols. To address this problem, we propose a Wi-Fi backscatter system that obtains channel diversity by applying multiple antennas. Two backscatter methods are described for improving the data rate or reliability in the proposed system. In addition, we propose three low complexity demodulation methods to address the high computational complexity problem caused by multiple antennas: (1) SET (subcarrier energy-based threshold) method, (2) TCST (tag’s channel state-based threshold) method, and (3) SED (similar Euclidean distance) method. In order to verify the performance of the proposed backscatter method and low complexity demodulation schemes, the 802.11 TGn (task group n) channel model was utilized in simulation. In this paper, the proposed tag sensor structure was compared with existing methods using only sub-channels with a large difference in received CSI (channel state information) values or adopting power-level modulation. The proposed scheme showed about 10 dB better bit error rate (BER) performance and throughput. Also, proposed low complexity demodulation schemes were similar in BER performance with a difference of up to 1 dB and the computational complexity was reduced by up to 60% compared to the existing Euclidean distance method.

show abstract

Section: Set Methodsmentioning

confidence: 99%

Section: Performance and Computational Complexity Of The Low Compleximentioning

confidence: 99%

Wi-Fi Backscatter System with Tag Sensors Using Multi-Antennas for Increased Data Rate and Reliability

Kim

Park

Jung

et al. 2020

Sensors

View full text Add to dashboard Cite

show abstract

“…The SAR is a measure of the rate at which energy is absorbed by the human body when exposed to an electromagnetic field for mobile devices . It is formulated as,

italicSAR = \frac{σ}{2 ρ} {‖E‖}^{2}

where, ρ (kg/m 3 ) and σ (S/m) are the body tissue density and conductivity, respectively.…”

Section: Sar Performance Of Proposed Antennamentioning

confidence: 99%

“…The SAR is a measure of the rate at which energy is absorbed by the human body when exposed to an electromagnetic field for mobile devices. 22 It is formulated as,…”

Section: Sar Performance Of Proposed Antennamentioning

confidence: 99%

Dual band frequency tunable planar inverted‐F antenna for mobile handheld devices

Ganesh

Choukiker

2020

Int J RF Microw Comput Aided Eng

View full text Add to dashboard Cite

A single feed, dual‐band frequency tunable planar inverted‐F antenna (PIFA) is presented for mobile handheld device applications. The proposed antenna is designed using the transmission line model. The dual‐band frequency tunability is achieved by varying the capacitance of the varactor diode between 4.15 pF (0 V) and 0.72 pF (15 V). The measured impedance bandwidth of −6 dB is realized from 0.8 to 0.98 GHz for the lower band and 1.65 to 2.2 GHz for the higher band. The designed antenna provides the independent frequency tunability for both the bands without disturbing each other. The maximum antenna gain is estimated 2.64 dBi for the proposed PIFA. Also, it has a maximum efficiency of ~85% for the mobile handheld device. In addition, the proposed PIFA is investigated with SAM phantom model for head and hand, found to be within the acceptable SAR limit of 1.6 W/Kg.

show abstract

“…To obtain an impedance bandwidth that can cover both the LTE 42 and/or LTE 43 and LTE 46 bands, several 5G MIMO antenna designs have been reported in the last few years. In these papers, different techniques have successfully demonstrated 5G arrays with 8 or 10 antenna elements aiding reduction of mutual coupling and dual-band operation, such as a T-shaped coupled-fed slot antenna array [5], a stepped impedance resonator (SIR) [18], and a protruded parasitic structure etched on the ground plane [19]. However, although the previously reported works have provided antenna arrays in multiband below 6 GHz for 5G smartphone applications, it is still difficult for antenna engineers to design a compact 5G MIMO antenna array having multi-modes and multi-bands, which offers good MIMO performance and radiation characteristics Therefore, in this paper, multiband and dual-mode 4-, 6-, and 8-antenna array designs for 5G smartphone applications are proposed.…”

Section: Introductionmentioning

confidence: 99%

Printed 5g Mimo Antenna Arrays in Smartphone Handset for Lte Bands 42/43/46 Applications

Aziz¹,

Naji²

2020

PIER M

View full text Add to dashboard Cite

In this paper, a dual-band 4-, 6-, and 8-element multiple-input multiple-output (MIMO) antenna arrays operating at the sub-6-GHz (LTE 42/43 and 46) bands for the fifth-generation (5G) smartphones are proposed. To realize these three MIMO applications in two LTE bands, miniaturized spiral and meander line-shaped strips coupled-fed patch antenna elements are printed on the front side of an FR4 system circuit board and are able to excite two resonance modes. Polarization and spatial diversity techniques are applied to these elements so that the enhanced isolation and reduced coupling effects can be attained. The proposed single antenna element besides 8-element antenna array has been fabricated and experimentally measured. Desirable simulated and measured S-parameters (reflection and transmission coefficients) are obtained for the antenna arrays over the working dual frequency bands. The diversity performance, such as the envelope correlation coefficient (ECC) and diversity gain (DG), has also been simulated and analyzed. Moreover, the performance results, antenna gain, and efficiency over the bands and radiation patterns at the specified resonant frequencies are also presented.

show abstract

Dual-Band Eight-Antenna Array Design for MIMO Applications in 5G Mobile Terminals

Cited by 148 publications

References 19 publications

Wi-Fi Backscatter System with Tag Sensors Using Multi-Antennas for Increased Data Rate and Reliability

Wi-Fi Backscatter System with Tag Sensors Using Multi-Antennas for Increased Data Rate and Reliability

Dual band frequency tunable planar inverted‐F antenna for mobile handheld devices

Printed 5g Mimo Antenna Arrays in Smartphone Handset for Lte Bands 42/43/46 Applications

Contact Info

Product

Resources

About