A miniaturized highly isolated double negative metasurface MIMO antenna for sub-6GHz band

Sharma, Rashbha; Khanna, Rajesh; Singla, Geetanjali

doi:10.1007/s12046-022-01987-z

Cited by 7 publications

(4 citation statements)

References 33 publications

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“…6 As a result, various decoupling techniques have recently been investigated and used successfully to achieve high isolation between the antenna elements and minimize mutual coupling. 4,[7][8][9][10][11][12][13][14][15][16] Due to the constrained space on handheld devices, planar antennas with low cost and simple integration are suitable for use. Various designs for handheld device antennas for 5G applications have recently been available at frequencies below 6 GHz.…”

Section: Introductionmentioning

confidence: 99%

“…Low‐profile antennas are ideal for use in 5G terminals, especially in hand‐portable devices, as long as they have enough operating bandwidth and less mutual coupling 6 . As a result, various decoupling techniques have recently been investigated and used successfully to achieve high isolation between the antenna elements and minimize mutual coupling 4,7–16 . Due to the constrained space on handheld devices, planar antennas with low cost and simple integration are suitable for use.…”

Section: Introductionmentioning

confidence: 99%

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Isolation enhancement of distinct element dual polarized compact MIMO antenna for 5G/WLAN application

Munusami,

Venkatesan

2024

Micro & Optical Tech Letters

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A novel‐shaped dual‐polarized low‐profile multiple‐input multiple‐output (MIMO) antenna with high isolation is proposed for 5G/WLAN application. An 8‐element MIMO antenna design comprises two unique planar radiators (chamfer, circular). Each radiator has dual feed and dual polarization characteristics. The prototype is fabricated with an FR‐4 dielectric substrate. A decoupling structure maintains desirable isolation for self‐isolated elements (−12 dB) using substrate integrated waveguide stubs between inter‐ports and high isolation among the adjacent radiating elements (−15 dB). The simulation was performed by using CST microwave studio. The simulated results of the proposed MIMO antenna are compared with the measurement results. Furthermore, ECC and DG are investigated.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Isolation enhancement of distinct element dual polarized compact MIMO antenna for 5G/WLAN application

Munusami,

Venkatesan

2024

Micro & Optical Tech Letters

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“…In MIMO, orthogonally polarized elements are highly isolated from each other [8][9][10][11]. Further, by utilizing various decoupling structures, it is possible to improve the isolation between elements [1,[12][13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Dual-feed Orthogonally Polarized Compact 8-element MIMO Antenna Using Metallic Stub and Decoupling Unit for Isolation Enhancement of Sub-6 GHz 5G Application

Cholavendan,

Rajeshkumar

2024

PIER Letters

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A compact dual-feed multiple-input multiple-output (MIMO) antenna is designed for sub-6 GHz 5G applications with isolation enhancement. The proposed dual-polarized MIMO antenna formed by each patch uses two inset-feed lines placed orthogonal to each other with symmetric conditions, which excite each port to resonate at the same frequency (3.65 GHz). The stub is identified diagonally based on plated through-hole technology between orthogonal ports. The structure employs a half mode and maintains minimum interport isolation (≤ −12 dB) of each patch, followed by another patch to form an 8-element miniaturized MIMO antenna. High isolation (≤ −15 dB) is achieved with the help of a decoupling structure placed between the antennas in the ground plane. Measurements of a fabricated prototype validate the simulation results. The diversity performances of MIMO antenna parameters like envelope correlation coefficient (ECC), diversity gain (DG), and Mean Effective Gain (MEG) are also found within acceptable ranges.

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“…18 Hexagonal-SRR and decoupling second-order filter circuit are placed in proximity to the octagonal-shaped wideband MIMO antenna for enhancement of isolation at 5G-WLAN application. 19 The meta-surfaces-based multiple decoupling techniques are reported in literature such as decoupling structures between adjacent elements to minimize EM coupling, 20 metasurface-SRR as decoupling unit printed on same surface, 21 superstrate, 22 or downstrate, 23 and double-negative (DNG) metasurface-based antenna 24 is reported for size reduction, wide bandwidth, and isolation enhancement of 5G-MIMO wireless application. The dielectric resonator antenna is positioned in closed loop, 25 opposite each other, 26 to obtain enhanced isolation since the magnetic fields excited inside the radiator are out of phase (180 ).…”

Section: Introductionmentioning

confidence: 99%

Cavity‐backed substrate integrated waveguide MIMO element with enhanced isolation for 5G communication

Munusami,

Venkatesan

2023

Int J Communication

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SummaryThis article communicates a novel compact four‐element orthogonal cavity‐backed antenna for 5G applications with enhanced isolation. The proposed dumbbell‐shaped substrate integrated waveguide–multiple input/multiple output (SIW‐MIMO) antenna resonate at 5.25 GHz (sub‐6 GHz) based on vias and resonate at 27 GHz (mm‐wave) with copper filling vias using FR‐4 substrate. Both prototypes are separately designed, fabricated, and tested using same dimension (40 mm × 40 mm × 1.6 mm) as well as same radiating structure. Moreover, SIW MIMO antenna design performances are compared between FR‐4 and Rogers RT/Duroid substrate. Deployment of SIW technique in MIMO antenna minimizes the antenna footprint and mutual coupling without involving any decoupling structure. The antenna simulation characteristics of both operating bands are compared and validated with the measurement results. Furthermore, the MIMO diversity parameters are examined.

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A miniaturized highly isolated double negative metasurface MIMO antenna for sub-6GHz band

Cited by 7 publications

References 33 publications

Isolation enhancement of distinct element dual polarized compact MIMO antenna for 5G/WLAN application

Isolation enhancement of distinct element dual polarized compact MIMO antenna for 5G/WLAN application

Dual-feed Orthogonally Polarized Compact 8-element MIMO Antenna Using Metallic Stub and Decoupling Unit for Isolation Enhancement of Sub-6 GHz 5G Application

Cavity‐backed substrate integrated waveguide MIMO element with enhanced isolation for 5G communication

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