MIMO Antennas for Smart 5G Devices

Shoaib, Nosherwan; Shoaib, Sultan; Khattak, Riqza Y.; Shoaib, Imran; Chen, Xiao; Perwaiz, Aqib

doi:10.1109/access.2018.2876763

Cited by 89 publications

(53 citation statements)

References 30 publications

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“…This misalignment may also have affected the accuracy of the measured values. Finally, as shown in Table , the size and the gain of the proposed antenna are compared with array antennas, MIMO antenna, metasurface antenna, and metamaterial antenna . The MPA with VCSRM demonstrates better performance over MIMO, metasurface, metamaterial, and array antenna with its high gain and small size.…”

Section: Simulation and Measurement Resultsmentioning

confidence: 99%

“…The Array antennas have improved bandwidth and gains . The multiple‐input and multiple‐output (MIMO) antenna can obtain high‐speed data transfer rates despite having a low gain . However, these antennas are large in size and complex design is required to solve the problem of coupling between elements or ports of an antenna.…”

Section: Introductionmentioning

confidence: 99%

“…[4][5][6] The multiple-input and multiple-output (MIMO) antenna can obtain high-speed data transfer rates despite having a low gain. [7][8][9] However, these antennas are large in size and complex design is required to solve the problem of coupling between elements or ports of an antenna. The use of metamaterial is a promising technology for performance enhancement, miniaturization, and easy fabrication of antennas.…”

Section: Introductionmentioning

confidence: 99%

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Millimeter‐wave microstrip patch antenna using vertically coupled split ring metaplate for gain enhancement

Jeong

Hussain

Park

et al. 2019

Micro & Optical Tech Letters

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This article presents a millimeter‐wave (mmWave) microstrip patch antenna (MPA) with a vertically coupled split ring metaplate (VCSRM). The narrow bandwidth and low gain of MPA are improved using VCSRM by periodically arranging split rings on the front and backsides of a dielectric slab. Numerical and experimental results show that the proposed antenna attains good radiation pattern, a high gain of 11.94 dBi, and a measured fractional bandwidth covering 26.58 to 29.31 GHz (9.77%). The gain of the antenna is increased by 5.35 dBi and the bandwidth is improved by 3.87% when compared to MPA without VCSRM. Thus, the proposed antenna with a small size of 18 × 22 mm2 is suitable for mmWave applications.

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Section: Simulation and Measurement Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Millimeter‐wave microstrip patch antenna using vertically coupled split ring metaplate for gain enhancement

Jeong

Hussain

Park

et al. 2019

Micro & Optical Tech Letters

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“…MIMO antenna systems are used to enhance the capacity of a wireless radio channel and reduce the effect of fading by using diversity combining techniques such as maximal-ratio combining (MRC), equal-gain combining (EGC), and selection combining (SC). 5 A compact UWB antenna array is therefore in demand to support the desired channel bandwidth and MIMO based communication systems.…”

Section: Introductionmentioning

confidence: 99%

A complementary Sierpinski gasket fractal antenna array integrated with a complementary Archimedean defected ground structure for portable 4G/5G UWB MIMO communication devices

Sohi

Kaur

2020

Micro & Optical Tech Letters

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This article presents the design, development, and experimental validation of an aperture coupled complementary Sierpinski gasket equilateral triangular fractal antenna array for portable 4G/5G UWB communication devices. The proposed antenna array is printed on two FR-4 substrate layers (ε r = 4.4, height = 1.57 mm, and tan δ = 0.024) with two fractal triangular patches on the top layer (separated by a distance of 3λ/2) and feed network on the bottom layer of FR-4. The fractal patches (optimized up to second order of iteration) are fed using an aperture-coupled feeding mechanism, where the aperture slots in the ground layer are modified to complementary Archimedean spiral slots which are interconnected by a modified "X" shaped slot to improve the impedance matching at the operational bands. The proposed array has overall volumetric dimensions of 41 × 99.4 × 3.245 mm 3 and provides a size reduction of 46% for the metallic area using the fractal geometry. The proposed array shows a simulated UWB response from 4.3 to 11.6 GHz (fractional bandwidth of 91.8% at 7.95 GHz) with a simulated peak gain of 4.7 dB (at 9.2 GHz) and port-to-port isolation of ≤−15.8 dB for the entire band. For validation of simulated responses, the proposed array is fabricated and tested for S-parameters (S 11 , S 22, S 12 , and S 21 ). A measured impedance bandwidth of 6.3 GHz is observed for a frequency band from 5.7 to 12 GHz. Two additional frequency bands are also exhibited by the array from 4.1 to 4.25 GHz and 4.7 to 5.3 GHz. The array diversity parameters such as envelope correlation coefficient (≤0.007 [simulated], ≤0.0057 [measured]), diversity gain (≥9.999 [simulated], ≥9.971 [measured]), mean effective gain (≥−3.9 dB [simulated], ≥−5.1 dB [measured]), and channel capacity loss, (≤0.37 bits/s/Hz [simulated], ≤0.4 bits/s/ Hz [measured]) which are calculated using the simulated and measured S-parameters of the array are also observed. These parameters allow the proposed fractal array to be implemented in a diversity combining technique to improve the overall SNR and hence support a high data rate for 4G/5G multimedia services. K E Y W O R D S aperture coupled feed, complementary Archimedean spiral, complementary Sierpinski gasket fractal, multiple-input multiple-output (MIMO), UWB

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“…Compared to mobile data traffic, WIFI has a faster transfer speed at a lower price, so it becomes top priority while transmitting massive data for terminal devices [6,7]. To further realize a higher data rate without additional power, multiple-input multiple-output (MIMO) antennas with proper isolation are being widely applied in mobile terminals as well [8][9][10][11][12][13][14]. However, for the metal-rimmed smartphone utilizing multiple antennas, the high mutual coupling in smartphones will occur inevitably when the MIMO antennas share the common part of metal rim and work in the same frequency band.…”

Section: Introductionmentioning

confidence: 99%

A Dual-Band Dual-Antenna System with Common-Metal Rim for Smartphone Applications

Ding

Zhou

et al. 2019

Electronics

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A dual-antenna system operating at WIFI and GPS bands is proposed for common-metal rimmed smartphones applications. This dual-antenna system, which is horizontally placed on a ground plane of 4.5 × 75 mm2, consists of two folded inverted-F antennas (IFAs) sharing the same metal rim. Each IFA contains part of the metal radiating arm, and both IFAs own approximately one-quarter free space wavelengths at 2.44 GHz. A matching network is embedded in the feeding line of the left IFA to provide a resonant frequency at 1.575 GHz. By adjusting the positions of the shorting branch and feeding line, good impedance matching is obtained. Two gaps in the metal frame and a center shorting branch between two IFAs are adopted to improve the isolation. The isolations of better than 22 dB and 19 dB in GPS and WIFI bands are attained, respectively. The proposed antenna is fabricated, and the measured results regarding S-parameters, radiation efficiency, gain, as well as diversity performances are presented.

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MIMO Antennas for Smart 5G Devices

Cited by 89 publications

References 30 publications

Millimeter‐wave microstrip patch antenna using vertically coupled split ring metaplate for gain enhancement

Millimeter‐wave microstrip patch antenna using vertically coupled split ring metaplate for gain enhancement

A complementary Sierpinski gasket fractal antenna array integrated with a complementary Archimedean defected ground structure for portable 4G/5G UWB MIMO communication devices

A Dual-Band Dual-Antenna System with Common-Metal Rim for Smartphone Applications

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