Pattern diversity and defected ground structure for decoupling planar Yagi MIMO antenna

Shen, Wanting; Pan, Shaopeng; Li, Gaosheng; Yang, Feng; Li, Jinxin; Xiao, Pei

doi:10.1016/j.aeue.2021.153980

Cited by 6 publications

(3 citation statements)

References 30 publications

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“…Moreover, for practical applications, common ground plane is required due to which current in the ground plane excites the other antenna element and degrades the performance of the antenna in terms of radiation pattern and efficiency. Thus, defective ground structures or slots on the ground plane significantly reduce the surface current to excite the other antenna, which in turn provides a greater degree of isolation among ports [ 95 ]. Metamaterials structures designed on the radiating element, ground plane, or between antenna elements significantly improve the isolation.…”

Section: Design Challenges For 5g Mimo Antennasmentioning

confidence: 99%

Advances in MIMO Antenna Design for 5G: A Comprehensive Review

Raj

Mishra

Kumar

et al. 2023

Sensors

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Multiple-input multiple-output (MIMO) technology has emerged as a highly promising solution for wireless communication, offering an opportunity to overcome the limitations of traffic capacity in high-speed broadband wireless network access. By utilizing multiple antennas at both the transmitting and receiving ends, the MIMO system enhances the efficiency and performance of wireless communication systems. This manuscript specifies a comprehensive review of MIMO antenna design approaches for fifth generation (5G) and beyond. With an introductory glimpse of cellular generation and the frequency spectrum for 5G, profound key enabling technologies for 5G mobile communication are presented. A detailed analysis of MIMO performance parameters in terms of envelope correlation coefficient (ECC), total active reflection coefficient (TARC), mean effective gain (MEG), and isolation is presented along with the advantages of MIMO technology over conventional SISO systems. MIMO is characterized and the performance is compared based on wideband/ultra-wideband, multiband/reconfigurable, circular polarized wideband/circular polarized ultra-wideband/circular polarized multiband, and reconfigurable categories. The design approaches of MIMO antennas for various 5G bands are discussed. It is subsequently enriched with the detailed studies of wideband (WB)/ultra-wideband (UWB), multiband, and circular polarized MIMO antennas with different design techniques. A good MIMO antenna system should be well decoupled among different ports to enhance its performance, and hence isolation among different ports is a crucial factor in designing high-performance MIMO antennas. A summary of design approaches with improved isolation is presented. The manuscript summarizes the various MIMO antenna design aspects for NR FR-1 (new radio frequency range) and NR FR-2, which will benefit researchers in the field of 5G and forthcoming cellular generations.

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Section: Design Challenges For 5g Mimo Antennasmentioning

confidence: 99%

Advances in MIMO Antenna Design for 5G: A Comprehensive Review

Raj

Mishra

Kumar

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…The main challenge in multiple antenna design is to improve inter-element isolation of the antenna system [3]. Various studies have been reported in the literature [1][2][3][4][5][6][7][8][9][10][11][12][13][14] in this regard. In reference [1], the author has proposed two element MIMO antenna.…”

Section: Introductionmentioning

confidence: 99%

“…Reference [6] proposed MIMO antenna of size of 20 × 45 mm 2 with isolation of about 25 dB. In references [7] - [13], different MIMO antennas with different sizes are designed for 5G applications. In reference [14], the design of a MIMO antenna for an UWB system with a size of 60 × 35 mm 2 is presented.…”

Section: Introductionmentioning

confidence: 99%

Design of circular slots loaded MIMO antenna with DGS at 28 GHz for 5G wireless services

Ravi Kumar Goyal

2024

jes

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In this paper, a MIMO microstrip patch antenna with four radiating elements is designed and analyzed at 28 GHz. This paper addresses the problem of mutual coupling without adding a decoupling network. The decoupling method increases the complexity and volume of MIMO antennas. The CST Microwave simulator is used to simulate the MIMO antenna. The simulation and measurement results are compared to analyze the antenna's performance. The parameters of the MIMO patch antenna, including return loss, VSWR, gain, beam width, and radiation pattern, are evaluated at a center frequency of 28 GHz. The overall dimensions of the MIMO antenna are 60 × 42 × 1.6 mm3.An H-shaped slot is inserted in the middle of the ground plane to minimize mutual coupling among the radiating elements. The isolation amplitude between radiating elements is observed greater than 35 dB at 28 GHz frequency. A wide impedance bandwidth of 4 GHz (26.5 to 30.5) is achieved, by etching four small arcs into the patch’s corners. In this work, two circular slots are inserted on the radiating element to widen the bandwidth further by adjusting the surface current on each radiating patch. At the center frequency of 28 GHz, the Envelope Correlation Coefficient (ECC) is observed to be 0.0001, with a diversity gain of 10 dB. The antenna has a maximum radiation efficiency of 75% and a peak gain of 7.62 dB. This antenna can be used for 5G wireless services.

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