Mutual Coupling Reduction of a Wideband Circularly Polarized Microstrip MIMO Antenna

Adam, Ismahayati; Yasin, Mohd Najib Mohd; Ramli, Norazan Mohamed; Jusoh, M.; Rahim, Hasliza A.; Latef, Tarık Abdul; Izam, Tengku Faız Tengku Mohmed Noor; Sabapathy, Thennarasan

doi:10.1109/access.2019.2928899

Cited by 48 publications

(31 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The antenna in [ 20 ] provided wider ARBW, but its ground planes were not connected to each other, and therefore it could not be used in practical applications. In addition, the antennas presented in [ 22 , 24 ] had a larger size and separated ground planes. As compared to the antennas in [ 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ], the proposed dual-CP four-element MIMO antenna offers broader axial ratio and impedance bandwidths and relatively small size.…”

Section: Results Discussionmentioning

confidence: 99%

“…Therefore, dual-polarized antennas with MIMO features have been gaining popularity in recent years. In the last five years, various CP MIMO antenna configurations have been presented for wireless local area network (WLAN), C-band, and satellite applications [ 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ]. In [ 17 ], a dual-port antenna with two resonating elements was proposed for WLAN applications, where the upper square patch with truncated corners showed CP behaviour, while the bottom interdigital-type radiator showed linearly polarized (LP) behaviour.…”

Section: Introductionmentioning

confidence: 99%

“…In [ 21 ], a compact MIMO antenna with polarization diversity was reported, where three grounded stubs and an F-shaped defected ground structure (DGS) were used to obtain improved inter-element isolation. A CP MIMO antenna comprising two electromagnetically coupled circular-shaped monopole radiators was presented [ 22 ], where inter-element coupling was improved by using a rectangular decoupling element. In [ 23 ], a two-port CP MIMO antenna was presented with polarization diversity, where two CPW-fed monopole elements were located opposite each other for obtaining dual circular polarization.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dual Circularly Polarized Planar Four-Port MIMO Antenna with Wide Axial-Ratio Bandwidth

Kumar

Lee

Kim

et al. 2020

Sensors

View full text Add to dashboard Cite

A broadband compact-sized planar four-port multiple-input–multiple-output (MIMO) antenna with polarization diversity is presented. The proposed dual circularly polarized (CP) MIMO antenna consists of four G-shaped monopole elements, two of which are left-hand CP and the other two are right-hand CP. A vertical line strip in the G-shaped radiating element acts in balancing the vertical and horizontal electric field components to obtain 90° phase difference between them for circular polarization. Also, an I-shaped strip is incorporated between the ground planes of the G-shaped antenna elements to obtain equal voltage level in the proposed MIMO configuration. The dual circular polarization mechanism of the proposed MIMO/diversity antenna is analysed from the vector current distributions. The impedance bandwidth (S11 ≤ –10 dB) of the MIMO antenna is 105.9% (4–13 GHz) and the 3 dB axial ratio bandwidth (ARBW) is 67.7% (4.2–8.5 GHz), which is suitable for C-band applications. The overall size of the MIMO antenna is 70 × 68 × 1.6 mm3, and the minimum isolation between the resonating elements is 18 dB. The envelope correlation coefficient is less than 0.25, and the peak gain within the resonating band is 6.4 dBi.

show abstract

Section: Results Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dual Circularly Polarized Planar Four-Port MIMO Antenna with Wide Axial-Ratio Bandwidth

Kumar

Lee

Kim

et al. 2020

Sensors

View full text Add to dashboard Cite

show abstract

“…In [29,30], four-port antennas with smaller ARBW and Table 3 compares the performance of the designed quad-port MIMO antenna with other reported MIMO/diversity antenna geometries [20][21][22][23][24][25][26][27][28][29][30][31]. Large-size dual-port or triple-port antennas with small impedance bandwidth are reported in [20][21][22][23][24][25][26][27][28]. In [22], the antenna possesses poor inter-element isolation, but good 3-dB ARBW.…”

Section: Results Discussionmentioning

confidence: 99%

“…In [24], a compact CP two-element MIMO antenna was presented for off-body communications, where a stub extended from the ground surface alongside the feed line produces the vertical component, while the current alongside the width of the ground surface produces the horizontal components. A CP dual-port MIMO antenna was suggested for 1.8 to 2.6 GHz bandwidth in [25], where a line patch was embedded between the radiating patches to obtain high isolation. In [26], a compact dual polarized UWB MIMO antenna for access point applications was proposed, where a modified serpentine structure (MSS) decoupling element was implanted amongst the radiators to obtain high isolation.…”

Section: Introductionmentioning

confidence: 99%

Design of Quad-Port Ultra-Wideband Multiple-Input-Multiple-Output Antenna with Wide Axial-Ratio Bandwidth

Kumar

Urooj

Malibari

2020

Sensors

View full text Add to dashboard Cite

This article presents a compact, planar, quad-port ultra-wideband (UWB) multiple-input–multiple-output (MIMO) antenna with wide axial ratio bandwidth (ARBW). The proposed MIMO design consists of four identical square-shaped antenna elements, where each element is made up of a circular slotted ground plane and feed by a 50 Ω microstrip line. The circular polarization is achieved using a protruding hexagonal stub from the ground plane. The four elements of the MIMO antenna are placed orthogonally to each other to obtain high inter-element isolation. FR-4 dielectric substrate of size 45 × 45 × 1.6 mm3 is used for the antenna prototype, and a good agreement is noticed among the simulated and experimental results. The proposed MIMO antenna shows 3-dB ARBW of 52% (3.8–6.5 GHz) and impedance bandwidth (S11 ≤ −10 dB) of 144% (2.2–13.5 GHz).

show abstract

Mathematically inspired MIMO antenna with enhanced isolation for wireless applications

Chouhan,

Malviya,

Panda

2024

Int J Communication

View full text Add to dashboard Cite

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.

show abstract

Mutual Coupling Reduction of a Wideband Circularly Polarized Microstrip MIMO Antenna

Cited by 48 publications

References 16 publications

Dual Circularly Polarized Planar Four-Port MIMO Antenna with Wide Axial-Ratio Bandwidth

Dual Circularly Polarized Planar Four-Port MIMO Antenna with Wide Axial-Ratio Bandwidth

Design of Quad-Port Ultra-Wideband Multiple-Input-Multiple-Output Antenna with Wide Axial-Ratio Bandwidth

Mathematically inspired MIMO antenna with enhanced isolation for wireless applications

Contact Info

Product

Resources

About