UWB CPW fed 4-port connected ground MIMO antenna for sub-millimeter-wave 5G applications

Patel, Amit; Desai, Arpan; Elfergani, Issa; Vala, Alpesh; Mewada, Hiren; Mahant, Keyur; Patel, Sagarkumar; Zebiri, Chemseddine; Rodrı́guez, Jonathan; Ali, Esraa Mousa

doi:10.1016/j.aej.2021.12.015

Cited by 39 publications

(25 citation statements)

References 30 publications

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“…The proposed MIMO structure has highest number of elements with least inter-element spacing thus signifying a compact design. minimum isolation between the antenna elements for the proposed MIMO structure is lower than other reported structures except [10,20] although [10,20] have higher inter-element spacing thereby compromising the compactness of the structure. High XPR is a severe problem for a MIMO antenna design.…”

Section: Group Delaymentioning

confidence: 79%

“…In recent industries are expecting low profile transparent material to design smart devices that can be more convenient and applicable in portable flexible wearable devices [9]. Different countries already released licensed 5G frequency bands to exploit the mm-wave communication industries [10][11][12]. The basic 5G mm-wave licensed bands are n258 (24.25-27.50 GHz), n257 (26.5-29.5 GHz), n261 (27.50-28.35 GHz), n260 (37.0-40.0 GHz), and n259 (39.5-43.5 GHz) [13].…”

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confidence: 99%

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Design and Characterization of 10-Elements MIMO Antenna With Improved Isolation and Radiation Characteristics for mm-Wave 5G Applications

et al. 2022

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A ten-elements MIMO antenna with improved isolation and reduction of X-polar radiation (XPR) in millimeter (mm) wave region is presented. The individual antenna element consists of stub loaded coplanar waveguide (CPW) structure with elliptical shaped radiator. Defected ground structure (DGS) has been incorporated by engraving partial elliptical shaped slots at the coplanar ground to reduce the mutual coupling effect between the adjacent antenna pairs of the MIMO. The backside of the substrate has a metallic plane with defects which is not connected to the coplanar ground of the antenna. This defected metal structure (DMS) acts as a reflector to improve the radiation characteristics by lowering of XPR as well as improving the co-pol to X-pol isolation. The proposed MIMO structure has a fractional bandwidth of 23.52% (22.5GHz-28.5 GHz) which entails the mm-wave 5G frequency spectrum n258 (24.25-27.5 GHz). The isolation| characteristics of the proposed MIMO antenna are below -35 dB over the operating bandwidth for any pair of adjacent antenna elements which imply significantly improved isolation between the adjacent antenna elements with highly compact layout area of 3.4λ × 8.5λ, where λ is wavelength corresponding to the mid-point of the bandwidth. The inter-element spacing of the MIMO structure is 0.44 λ. The main attractive feature offered by this structure is reduction of XPR in the operating frequency range thus improving the co-pol to X-pol isolation up to 20 dB and 28 dB in the boresight direction in both the XZ and YZ planes respectively. Furthermore, the co-pol to X-pol isolation is maintained above 15 dB almost throughout the elevation angular region -180 o to 180 o thereby negating the hindrance imposed by surface waves in mm-wave region. The diversity performances in terms of Envelope Correlation Coefficient (ECC), Diversity Gain (DG) and Channel Capacity Loss (CCL) are obtained as 0.1 × 10 -6 , 10 dB and 0.005 bps/Hz respectively which are within the acceptable limits. Mean effective gain (MEG) values with respect to the excited port 2 and port 3 is identical and approximately -3dB thus indicating the mean value of these two ports to be almost 1 dB. The multiplexing efficiency of the proposed MIMO antenna is satisfactory over the bandwidth. The group delay is investigated and found to be almost constant with a variation of 1.2 ns thus indicating linear phase characteristic of the antenna. The proposed structure is compared with other mm-wave MIMO antennas and found to be advantageous with respect to the number of antenna elements, compactness, low mutual coupling, co-pol to X-pol isolation, and ECC. A prototype of the proposed 10-elements MIMO is fabricated, and the measured results resemble with the simulated results.INDEX TERMS Mm-wave MIMO, DGS, mutual coupling reduction, co-pol to X-pol isolation, DMS. I. INTRODUCTIONMm-wave MIMO antenna is an essential component for MIMO systems for achieving a complete package of high data stream, multifunctional applications and future generation communication sy...

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Section: Group Delaymentioning

confidence: 79%

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confidence: 99%

Design and Characterization of 10-Elements MIMO Antenna With Improved Isolation and Radiation Characteristics for mm-Wave 5G Applications

et al. 2022

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“…Another way to reduce transmission line losses, surface wave, and substrate losses is with a coplanar waveguide (CPW) antenna [ 69 ]. A few planar antennas designed with the concept of CPW/grounded-CPW are [ [70] , [71] , [72] , [73] ], in which the first two designs don't share common ground between ports, whereas the next two have common ground. The genuine MIMO antenna is one that shares the common ground point between all ports to maintain the single reference voltage.…”

Section: Mimo Antenna For Mmwave Applicationsmentioning

confidence: 99%

“…In [ 73 ], the design has a circular patch with an elliptical slot at the center, and two parasitic elements of a small circular patch on either side of the feed line, which acts as CPW, etched on top of Rogers 5880 substrate. The radius of the circular patch, parasitic element, elliptical slot, and the ground plane is varied to get the optimum wide bandwidth.…”

Section: Mimo Antenna For Mmwave Applicationsmentioning

confidence: 99%

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Planar MIMO antenna for mmWave applications: Evolution, present status & future scope

G¹,

Mane²,

Kumar³

et al. 2023

Heliyon

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Miniaturized six‐ring elliptical monopole‐based MIMO antenna for ultrawideband applications

Amroun,

Zebiri,

Sayad

et al. 2023

Int J Communication

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SummaryThis paper proposes a miniature two‐element Multiple Input Multiple Output (MIMO) antenna dedicated to UWB applications. The proposed MIMO design has a very low profile of 30 × 20 × 1.6 mm3. The proposed antenna is carefully designed and optimized using HFSS simulation software. As a proof of concept, the proposed design is realized and experimentally tested for MIMO applications. The proposed structure, printed on an FR4 substrate, comprises two symmetrical elliptical conductive patches on the upper side and a modified ground plane on the lower one. Each radiating element includes six elliptical rings. The modified ground plane consists of a T‐shaped strip and two semielliptical slots etched opposite the feed line. All the parameters of the design are carefully optimized to achieve an ultrawide bandwidth antenna spanning from (136.08%) 3.1 to 16.3 GHz. The results are discussed and analyzed in terms of bandwidth, gain, efficiency, radiation pattern, diversity gain, envelope correlation coefficient (ECC), total active reflection coefficient (TARC), and mean effective gain (MEG). All simulated results are found to be in good accordance with experiments. The design reveals attractive features for UWB applications. A good isolation (17 dB) between the two radiators is achieved despite the close proximity using the suggested ground plane geometry.

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UWB CPW fed 4-port connected ground MIMO antenna for sub-millimeter-wave 5G applications

Cited by 39 publications

References 30 publications

Design and Characterization of 10-Elements MIMO Antenna With Improved Isolation and Radiation Characteristics for mm-Wave 5G Applications

Design and Characterization of 10-Elements MIMO Antenna With Improved Isolation and Radiation Characteristics for mm-Wave 5G Applications

Planar MIMO antenna for mmWave applications: Evolution, present status & future scope

Miniaturized six‐ring elliptical monopole‐based MIMO antenna for ultrawideband applications

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