Modified ground and slotted MIMO antennas for 5G sub-6 GHz frequency bands

Agrawal, Neetu; Gupta, Manish; Chouhan, Sanjay

doi:10.1017/s1759078722000770

Cited by 8 publications

(3 citation statements)

References 38 publications

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“…The mutual coupling and isolation issues are addressed in various research papers by different techniques like parasitic elements (PEs), isolation structures, and neutralization lines 3–13 . Some MIMO antennas for 5G sub‐6 GHz band shows the better isolation using modified ground techniques 14 . Various antenna design techniques show the better isolation and efficiency using stepped patch antenna, 15 multi‐slot MIMO antenna, 16 and beamforming MIMO array 17 .…”

Section: Introductionmentioning

confidence: 99%

“…[3][4][5][6][7][8][9][10][11][12][13] Some MIMO antennas for 5G sub-6 GHz band shows the better isolation using modified ground techniques. 14 Various antenna design techniques show the better isolation and efficiency using stepped patch antenna, 15 multi-slot MIMO antenna, 16 and beamforming MIMO array. 17 Additionally, some better approaches to reduce the mutual coupling are utilized for 5G applications.…”

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confidence: 99%

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Mathematically inspired MIMO antenna with enhanced isolation for wireless applications

Chouhan,

Malviya,

Panda

2024

Int J Communication

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SummaryCurrent generation of mobile and wireless communication can have portable, compact, lightweight, highly reliable, easy to access, high coverage, high capacity, high SNR, and high gain antennas for non‐line‐of‐sight communication. MIMO technology provides these all and has data rate optimization, diversity, spatial multiplexing, and solution of multipath propagation. The current requirement for designing a compact MIMO antenna with better isolation is what spurred the creation of the proposed antenna. In this research, a mathematically inspired generalized antenna is proposed for 1.8/1.9 GHz application in the 1.5–2.1 GHz range. The bandwidth in this case is 600 MHz. The return loss is −78 dB at the resonant with more than 17 dB isolation in the entire band. The envelope correlation coefficient (ECC) is found below 5 × 10−3. The overall size of the antenna is 40 × 81.76 mm2on FR‐4 dielectric laminate. To improve the isolation further, a parasitic element is used between the radiating elements, and it provides 7 dB improvements in isolation and is confirmed by the surface current distribution. The radiation efficiency is more than 90%, and maximum current density of 29.9 A/m2 is found in the entire band. In this study, evaluation and discussion of additional antenna performance parameters channel capacity loss (CCL), mean effective gain (MEG), and specific absorption rate (SAR) are also included.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Mathematically inspired MIMO antenna with enhanced isolation for wireless applications

Chouhan,

Malviya,

Panda

2024

Int J Communication

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“…The most attractive application for the designed antenna can be seen at RF energy harvesting and short range communication. These multiband antennas are also used in MIMO and OFDM [23,24]. The gain of these antenna should be precisely large so that the reduction in power requirements would ultimately increase the battery life.…”

Section: Introductionmentioning

confidence: 99%

A Kagome Crest Fractal Optimized Quad-Band Antenna for Wireless Applications

Sau¹,

Sharma²,

Rao³

et al. 2023

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The design of multiband antenna plays a vital role and enhances the functionality of mobile equipment for various wireless services over the last decade. This paper presents a sophisticated quad-band fractal microstrip patch circular monopole antenna with a star shaped slot. The proposed structure is iterated two times to have a Kagome crest fractal antenna. In the paper, optimization of quad band antenna using the Quasi newton Optimizer (QNO) is also presented. Optimizing various design parameters for the proposed antenna in HFSS is simulated. The antenna dimensions are 100mmx100mmx1.6mm occupying an area of 100cm 2 . Model simulation and experimental validation is done for three frequency ranges, 2. resonating at 3.1GHz, 5.2GHz, 6.8GHz and 8.7GHz respectively. The proposed antenna operates for several wireless applications including RF Energy harvesting, dedicated short range communication, Satellite communication, wireless power transfer to a micro aerial vehicle, etc. can be covered with these band of frequencies. VSWR, return loss, radiation pattern, gain is some of the parameters considered to prove the performance of the fabricated design prototype.

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Four‐element equilateral triangular‐shaped MIMO antenna with connected ground for 5G sub:6 GHz N79 and WiFi‐6E band applications

Addepalli,

Nagaraju,

Medasani

et al. 2024

Int J Communication

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SummaryThe present communication presents a novel compact microstrip line feed dual‐band four‐element MIMO (multiple input multiple output) antenna for 5G sub‐6GHz N79 and WiFi‐6E bands with a defined size of 48 × 48 × 1.6 mm3. The FR4 substrate used in the construction of the designated antenna has a thickness of 1.6 mm, a relative permittivity of 4.4, and loss tangent values of 0.02. The proposed MIMO architecture consists of four equilateral triangle‐shaped antenna elements on top and ground with inverted L‐shaped stubs on the substrate's bottom layer. The ground structure of the antenna is a connected ground and is formed by defected ground parts which are connected with inverted L‐shaped stubs. The orthogonal structure of the MIMO antenna elements, with four armed square stubs among them, enhanced the isolation between surrounding antennas. The proposed four‐port MIMO antenna is built and tested in to validate design, scattering, and radiation performance, as well as MIMO diversity features. The designed antenna has more than 15 dB isolation and operates at 4.75 GHz from 4.45 to 5.2 GHz (5G sub‐6 GHz N79 band) and 6.3 GHz from 5.95 to 7.15 GHz (WiFi‐6E band). Furthermore, the design provides omnidirectional patterns, high gain (6.5dBi) and efficiency (>95%), a low envelope correlation coefficient (<0.00001) and acceptable diversity gain (10 dB), a good total active refraction coefficient (−10 dB) and low channel capacity loss (0.03 bit/s/Hz), and a considerable mean effective gain (MEG = −3 dB) and MEG ratio (0 dB). Because the simulated and tested results match so well, the antenna is a good candidate for 5G sub‐6 GHz N79 band operations.

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Modified ground and slotted MIMO antennas for 5G sub-6 GHz frequency bands

Cited by 8 publications

References 38 publications

Mathematically inspired MIMO antenna with enhanced isolation for wireless applications

Mathematically inspired MIMO antenna with enhanced isolation for wireless applications

A Kagome Crest Fractal Optimized Quad-Band Antenna for Wireless Applications

Four‐element equilateral triangular‐shaped MIMO antenna with connected ground for 5G sub:6 GHz N79 and WiFi‐6E band applications

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