Compact 4-Port Acs-Fed Uwb-Mimo Antenna With Shared Radiators

Zhang, Jingyi; Zhang, Fan; Tian, Wen-Peng

doi:10.2528/pierl15062304

Cited by 12 publications

(10 citation statements)

References 10 publications

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“…It is very difficult to select the best antenna with respect to the given criteria, since some antennas show good results in a particular set of criteria, while other antennas perform well in the other set of criteria. However, compared with other recent works, [7][8][9][10] and the proposed antenna have the merit of uniplanar design and eliminates the alignment inaccuracies happen during the fabrication process. As compared to these uni-planar designs, the proposed antenna has better frequency as well as timedomain performances, in spite of its low profile.…”

Section: Comparison With the Recent Workmentioning

confidence: 95%

Compact UWB MIMO antenna for tridirectional pattern diversity characteristics

Roshna

Deepak

Mohanan

2017

IET Microwaves, Antennas & Propagation

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A compact planar ultra‐wideband (UWB) antenna for multiple‐input–multiple‐output /diversity applications is proposed in this study. The proposed antenna consists of three staircase‐shaped radiating elements, and is fabricated on a single 45 mm × 25 mm substrate of dielectric constant 4.3 and thickness 1.588 mm. It offers a 2:1 voltage standing wave ratio impedance matching in the entire UWB band, as specified by the Federal Communications Commission. Spatial, polarisation and pattern diversities within the antenna elements ensure an average isolation of 25 dB throughout the operating band. Moreover, the antennas have directional radiation patterns with stable gain and favourable radiation efficiencies. Good pattern diversity with better transient responses, low envelope correlation coefficient and ample mean effective gain within the UWB band, are the attractive features of this antenna.

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Section: Comparison With the Recent Workmentioning

confidence: 95%

Compact UWB MIMO antenna for tridirectional pattern diversity characteristics

Roshna

Deepak

Mohanan

2017

IET Microwaves, Antennas & Propagation

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“…A DGS and U-shaped stubs are inserted on radiator [18,19] whereas a decoupling structure is used on top and bottom surfaces of the dielectric substrate to improve an isolation as well as bandwidth of the UWB MIMO antenna in [20]. Further, the overall size of the antenna is decrease by using asymmetric coplanar strip (ACS)-fed structure [21]. In [22][23][24], antenna elements are placed orthogonally to enhance the isolation.…”

Section: Introductionmentioning

confidence: 99%

Compact Quad-Port High Performance Uwb Mimo/Diversity Antenna With Slotted Ground Structure

Keshri¹,

Chandel²,

Sahu³

et al. 2021

PIER C

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A compact 30 × 30 mm 2 high performance four elements ultra-wide band multi-input multi-output (UWB MIMO) diversity antenna is proposed. The prototype antenna consists of four symmetrical antenna elements which are orthogonally placed on top surface of the substrate with partial slotted ground plane. The isolation among the antenna elements is improved by placing antenna elements orthogonally without any additional decoupling structure. The various antenna characteristic parameters, i.e., return loss (< −10 dB), isolation parameter (< −22 dB), radiation patterns near omnidirectional, and maximum realized gain 4.8 dB, were measured. The MIMO performances of prototype antenna were also measured in terms of various MIMO diversity parameters and found ECC < 0.06, DG > 9.98 dB, TARC < −10 dB and MEG < −3 dB throughout the frequency band. This design provides an operational bandwidth from 2.15 to 16.75 GHz which covers the whole UWB spectrum and is suitable for portable devices.

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“…Various methods have been reported to further reduce the mutual coupling effect of orthogonally polarised UWB MIMO antenna systems [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Creating multiple slots/slits in the ground plane is commonly used benefiting from the combination of inductance and capacitance [8][9][10][11]. Parasitic elements have been widely used between antenna elements to reduce the mutual coupling effect, which acts as reflectors [10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…Creating multiple slots/slits in the ground plane is commonly used benefiting from the combination of inductance and capacitance [8][9][10][11]. Parasitic elements have been widely used between antenna elements to reduce the mutual coupling effect, which acts as reflectors [10][11][12][13][14][15][16][17]. The low mutual coupling can also be realised by using a neutralisation line into antenna elements, hence avoiding the need for extra space [18].…”

Section: Introductionmentioning

confidence: 99%

Conceptual design of a compact four‐element UWB MIMO slot antenna array

Saad¹,

Mohamed

2019

IET Microwaves, Antennas & Propagation

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In this study, an effective methodology to design a compact four-element multiple-input-multiple-output (MIMO) antenna with high performance over ultra-wide bandwidth (BW) is presented and discussed. Taking the advantages of symmetry of most planar ultra-wideband (UWB) antennas, an asymmetric feeding scheme technique is utilised to chop a previously developed UWB slot antenna with overall dimensions of 30 mm × 30 mm into two halves to yield a more compact structure while retaining its overall frequency-and time-domain performances. Benefiting from orthogonal orientation, a compact UWB MIMO antenna system is arranged using four half-sized elements. The proposed MIMO antenna has an overall size of 40 mm × 40 mm and exhibits impedance BW from 2.94 to more than 14 GHz (10 dB return loss) with port isolation better than 17 dB over the entire operating band without using any decoupling structures. This is achieved via the inherent directional radiation properties of slot antenna elements and their asymmetrical placements. Envelope correlation coefficient is computed, and it is within the acceptable limit, which validates the design concept for building a compact MIMO antenna system with good performance.

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Compact 4-Port Acs-Fed Uwb-Mimo Antenna With Shared Radiators

Cited by 12 publications

References 10 publications

Compact UWB MIMO antenna for tridirectional pattern diversity characteristics

Compact UWB MIMO antenna for tridirectional pattern diversity characteristics

Compact Quad-Port High Performance Uwb Mimo/Diversity Antenna With Slotted Ground Structure

Conceptual design of a compact four‐element UWB MIMO slot antenna array

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