Design of two element Wi-MAX/WLAN MIMO antenna with improved isolation using a short stub-loaded resonator (SSLR)

Dkiouak, Aziz; Zakriti, Alia; Ouahabi, Mohssine El; Mchbal, Aicha

doi:10.1080/09205071.2020.1756927

Cited by 26 publications

(10 citation statements)

References 27 publications

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“…Diversity gain (DG) is the performance factor to characterize a diversity system. DG is dependent on the correlation coefficient, and it can be calculated by using Equation (5) as given in [42]. Here, e p is the diversity gain reduction factor due to the correlation between the two antenna elements.…”

Section: Diversity Performancementioning

confidence: 99%

A Compact U-Shaped Uwb-Mimo Antenna With Novel Complementary Modified Minkowski Fractal for Isolation Enhancement

Gurjar¹,

Upadyay²,

Kanaujia³

et al. 2021

PIER C

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A compact U-shaped ultra-wideband (UWB) multiple-input-multiple-output (MIMO) antenna with novel complementary modified Minkowski fractal (CMMF) for isolation enhancement is proposed. This antenna consists of two identical U-shaped monopole elements, a novel CMMF and a slot in the bottom of the ground plane for the isolation enhancement. The novel CMMF is designed by a technique iterated function system (IFS). The overall dimension of this compact antenna is 22 × 28 mm 2 . The impedance bandwidth of this antenna is 10.35 GHz, ranging from 3.06 GHz to 13.41 GHz. The minimum isolation is 17.07 dB for the operating frequency range and 18.4 dB for the UWB frequency range 3.1 to 10.6 GHz. The diversity parameters are also determined for the proposed MIMO antenna, and all are found satisfactory. The proposed MIMO antenna is fabricated, and its prototype measured results are found in good agreement with the simulated ones.

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Section: Diversity Performancementioning

confidence: 99%

A Compact U-Shaped Uwb-Mimo Antenna With Novel Complementary Modified Minkowski Fractal for Isolation Enhancement

Gurjar¹,

Upadyay²,

Kanaujia³

et al. 2021

PIER C

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“…Polarization orthogonal elements [11], Electromagnetic band-gap (EBG) structure [12], Meanderline EBG [13], neutralization line [14,15], stubs [16,17,18], parasitic elements [19,20], shorting pin [21], metamaterials with neutralization lines [22], [23], slots or carbon black film [24] have been presented in the literature. In [11], a MIMO system with two antenna elements that achieve orthogonal polarization with dimensions of 27 × 21 mm2 and an isolation level of 22.5 dB has been presented.…”

Section: Introductionmentioning

confidence: 99%

Quad-Port MIMO Filtenna With High Isolation Employing BPF With High Out-of-Band Rejection

2022

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A quad-port multiple-input multiple-output (MIMO) filtenna with compact dimensions of 50 × 50 mm2 are configured, in which each element is placed orthogonally to its adjacent to enhance the isolation. The MIMO element is configured based on the novel COVID-19 virus shape with a co-planar waveguide feeding structure (CPW) and dimensions 17 × 22 mm2. The element bandwidth is ranging from 3.3 GHz to more than 60 GHz. Three frequency notches are designed at 3.5 GHz for WiMAX and 5.5 GHz for WLAN, and 8.5 GHz for X-band applications. A bandpass filter (BPF) with high out of band rejection is used as a decoupling structure (DS) to improve the isolation to more than 30 dB across most of the bandwidth. The equivalent circuit model is scrutinized to investigate the enactment of the decoupling structure. The proposed MIMO filtenna system provides an impedance bandwidth of 2.4-18 GHz, a peak gain of 13.2 dBi, and an envelope correlation coefficient (ECC) less than 0.00021. In turn, channel capacity loss does not exceed 0.2. The MIMO filtenna is fabricated and measured. Good agreement between the measured and simulation results is achieved.

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“…To decrease coupling from adjacent antenna components, a wheel-like meta-material decoupling structure is placed between the two antenna elements. In [27] a dual-band MIMO was designed for Wi-MAX/WLAN applications. T-shaped junctions, which function as a short stub loaded resonator, are utilized for high isolation.…”

Section: Introductionmentioning

confidence: 99%

Isolation enhancement of metamaterial structure MIMO antenna for WiMAX/WLAN/ITU band applications

Pasumarthi

Kethavathu

Muthusamy

2022

Int. J. Microw. Wireless Technol.

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The μ-negative metamaterial (MNG) two-element MIMO antenna design was proposed in this article for WiMAX (2.5–2.8 GHz), WLAN (3.2–5.9 GHz), and ITU band (8.15−8.25 GHz) applications. The first design of the MIMO antenna operates at 2.7 and 4.9 GHz frequencies. In order to reduce the mutual coupling, a defective ground structure is used. For further isolation improvement, an MNG unit cell is placed in between the two radiating elements at a distance of 10 mm. The designed antenna elements have better than −23 dB coupling isolation between the two radiating elements. Moreover, with MNG an additional frequency of 8.2 GHz is obtained, which is useful for ITU band applications. The proposed antenna bandwidth is expanded by 19% in the lower operational band, 20% in the second operational band, and 32% in the higher frequency band with the MNG unit cell. From the analysis, the proposed antenna is suitable for WiMAX/WLAN/ITU band applications because of its low enveloped correlation coefficient, and highest directive gain and low mutual coupling between the radiating components. The proposed antenna was simulated, fabricated, and measured with the help of the Schwarz ZVL vector network analyzer and anechoic chamber. Both measured and simulated results are highly accurate and highly recommended for WiMAX/WLAN/ITU bands.

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Design of two element Wi-MAX/WLAN MIMO antenna with improved isolation using a short stub-loaded resonator (SSLR)

Cited by 26 publications

References 27 publications

A Compact U-Shaped Uwb-Mimo Antenna With Novel Complementary Modified Minkowski Fractal for Isolation Enhancement

A Compact U-Shaped Uwb-Mimo Antenna With Novel Complementary Modified Minkowski Fractal for Isolation Enhancement

Quad-Port MIMO Filtenna With High Isolation Employing BPF With High Out-of-Band Rejection

Isolation enhancement of metamaterial structure MIMO antenna for WiMAX/WLAN/ITU band applications

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