Tri-Polarized 12-Antenna MIMO Array for Future 5G Smartphone Applications

Li, Mingyang; Ban, Yong‐Ling; Xu, Ziqiang; Guo, Jinhong; Yu, Zhe-Feng

doi:10.1109/access.2017.2781705

Cited by 165 publications

(97 citation statements)

References 27 publications

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“…It can be observed that owing to the backed SIW cavity and etched slots, unidirectional patterns with high cross‐polarization levels are achieved at four cut planes including 0° plane, 45° plane, 90° plane, and 135° plane. Consequently, our proposed design with advantages of low profile, enhanced bandwidth, controllable radiation null, good passband radiation, and unidirectional patterns has potential applications for the fifth‐generation (5G) wireless systems …”

Section: Resultsmentioning

confidence: 99%

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Low‐profile SIW cavity antenna with enhanced bandwidth and controllable radiation null

Niu

Tan

2020

Micro & Optical Tech Letters

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A low‐profile substrate‐integrated‐waveguide (SIW) cavity antenna with enhanced bandwidth and a controllable radiation null is proposed. Serving as radiating elements, two slots are etched on a square SIW cavity. Four cavity modes including a fundamental mode (FM), a half mode (HM), and two quarter modes (QMs) are excited by a capacitively coupled feeding disc. Their frequencies can be controlled by adjusting positions of the slots and disc. Three radiating modes (ie, a HM and two QMs) are utilized to realize an antenna passband with enhanced bandwidth while a nonradiating mode (ie, the FM) is utilized to achieve a radiation null resulting in the sharp upper sideband and high stopband suppression. Experimental results show that the fabricated antenna with the profile of less than 0.04λ0 obtains the bandwidth of 440 MHz, gain of 5.24 dBi, and efficiency of 84%. However, the gain sharply drops to −22.07 dBi and the efficiency achieves a very low value of 0.15% at the radiation null. Due to covering the frequency band of 3.40‐3.60 GHz, the proposed design has potential applications for fifth‐generation (5G) wireless systems.

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Section: Resultsmentioning

confidence: 99%

“…Consequently, our proposed design with advantages of low profile, enhanced bandwidth, controllable radiation null, good passband radiation, and unidirectional patterns has potential applications for the fifth-generation (5G) wireless systems. 16,17…”

Section: Resultsmentioning

confidence: 99%

Low‐profile SIW cavity antenna with enhanced bandwidth and controllable radiation null

Niu

Tan

2020

Micro & Optical Tech Letters

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“…According to the requirement of cellular communications, compact, wideband and high isolation MIMO antenna is an urgent demand in the future mobile terminal and the portable applications [12][13][14][15][16][17]. Recently, several techniques have been introduced to design massive MIMO antennas for 4G and sub-6 GHz 5G mobile terminals [18][19][20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Mobile-Phone Antenna Array with Diamond-Ring Slot Elements for 5G Massive MIMO Systems

et al. 2019

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A design of mobile-phone antenna array with diamond-ring slot elements is proposed for fifth generation (5G) massive multiple-input/multiple-output (MIMO) systems. The configuration of the design consists of four double-fed diamond-ring slot antenna elements placed at different corners of the mobile-phone printed circuit board (PCB). A low-cost FR-4 dielectric with an overall dimension of 75 × 150 mm2 is used as the design substrate. The antenna elements are fed by 50-Ohm L-shaped microstrip-lines. Due to the orthogonal placement of microstrip feed lines, the diamond-ring slot elements can exhibit the polarization and radiation pattern diversity characteristic. A good impedance bandwidth (S11 ≤ −10 dB) of 3.2–4 GHz has been achieved for each antenna radiator. However, for S11 ≤ −6 dB, this value is 3–4.2 GHz. The proposed design provides the required radiation coverage of 5G smartphones. The performance of the proposed MIMO antenna design is examined using both simulation and experiment. High isolation, high efficiency and sufficient gain-level characteristics have been obtained for the proposed MIMO smartphone antenna. In addition, the calculated total active reflection coefficient (TARC) and envelope correlation coefficient (ECC) of the antenna elements are very low over the whole band of interest which verify the capability of the proposed multi-antenna systems for massive MIMO and diversity applications. Furthermore, the properties of the design in Data-mode/Talk-mode are investigated and presented.

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“…In the past, many MIMO antenna designs have been proposed for the 5G mobile applications. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] However, most of them were designed for 5G single band, [2][3][4][5][6][7][8][9][10][11][12][13] for example, the 3.5 GHz band (3.4-3.6 GHz). [3][4][5][6][7][8][9][10][11] Although some dual-band MIMO antenna systems were also proposed, [14][15][16][17][18] they just worked for two separate bands such as the 3.4-3.6 GHz band and 4.8-5.1 GHz 14 or 5.7-5.8 GHz band 15 ; or LTE bands 42/43 (3.4-3.8 GHz) and LTE band 46 (5.15-5.93 GHz).…”

Section: Introductionmentioning

confidence: 99%

“…To achieve the above goal, efforts have been made to improve the isolation. For example, approaches that are based on the neutralization line, 4,14,18 the two asymmetrically mirrored antennas, 6 the multimode decoupling technique, 7 the self-isolated antenna element, 8,9 the polarized antenna elements, [11][12][13] and the tightly arranged orthogonal-mode pairs 20 were proposed. However, all the above approaches have been applied only to the MIMO antenna systems that have narrow bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Broadband MIMO Antenna System for 5G Operations in Mobile Phones

Zhao

Ren

2019

Int J RF Microw Comput Aided Eng

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A broadband 8‐antenna multiple‐input and multiple‐output (MIMO) system working for 5G new radio N77 (3.3‐4.2 GHz) in mobile terminals is proposed. In particular, each antenna element/unit consists of a monopole‐type meandered branch and an inverted U‐shaped self‐isolated antenna branch; and the antenna unit is fed by the meandered branch. The antenna unit has two resonances generated separately by each branch of the antenna unit. Since the monopole couples strongly with the self‐isolated antenna element that has the inherent self‐isolation characteristics, quite good isolation for the broadband 8‐antenna MIMO system can be obtained. The results such as antenna efficiency, radiation patterns, envelope correlation coefficient, and channel capacity are also presented.

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Tri-Polarized 12-Antenna MIMO Array for Future 5G Smartphone Applications

Cited by 165 publications

References 27 publications

Low‐profile SIW cavity antenna with enhanced bandwidth and controllable radiation null

Low‐profile SIW cavity antenna with enhanced bandwidth and controllable radiation null

Mobile-Phone Antenna Array with Diamond-Ring Slot Elements for 5G Massive MIMO Systems

Broadband MIMO Antenna System for 5G Operations in Mobile Phones

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