A WLAN band-notched compact four element UWB MIMO antenna

Khan, Muhammad Saeed; Naqvi, Syed Aftab; Iftikhar, Adnan; Asif, Sajid M.; Fida, Adnan; Shubair, Raed M.

doi:10.1002/mmce.22282

Cited by 36 publications

(32 citation statements)

References 16 publications

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“…To address this issue, many solutions have been proposed to increase the isolation between the elements of MIMO antennas. In [8], by etching the slits inside the ground plane and eliminating the defined band helps to achieve the high isolation. The isolation between the MIMO antenna elements can also be achieved by maintaining a spacing of λ/2 between the adjacent antenna elements.…”

Section: Introductionmentioning

confidence: 99%

A Compact CPW-Fed Ultra-Wideband Multi-Input-Multi-Output (MIMO) Antenna for Wireless Communication Networks

et al. 2022

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In this article, a compact coplanar waveguide (CPW) technique based ultra-wideband multiple-input-multiple-output (MIMO) antenna is proposed. The design is characterized by a broad impedance bandwidth starting from 3 GHz to 11 GHz (266%). The overall size of the MIMO design is 60 × 60 mm 2 (1.24 × 1.24 𝝀 𝒈 𝟐 @ 3 GHz) with a thickness of 1.6 mm. To make the design ultra-wideband, the proposed MIMO antenna design has four jug-shaped radiating elements. The design is printed on a FR-4 substrate (relative permittivity of 𝜀r = 4.4 and loss tangent of tan𝛿 = 0.025). The polarization diversity phenomenon is realized by placing four antenna elements orthogonally. This arrangement increases the isolation among the MIMO antenna elements. The simulated results of the ultra-wideband MIMO antenna are verified by measured results. The proposed MIMO antenna has a measured diversity gain greater than 9.98, envelope correlation coefficient (ECC) less than 0.02, and good MIMO performance where the isolation is more than -20dB between the elements. The group delay, channel capacity loss (CCL), and the total active reflection coefficient (TARC) multiplexing efficiency and mean effective gain results are also analyzed. The group delay is found to be less than 1.2ns, CCL values calculated to be less than 0.4 bits/sec/Hz, while the TARC is below -10dB for the whole operating spectrum. The proposed design is a perfect candidate for ultra-wideband wireless communication systems and portable devices.INDEX TERMS Multi-input-multi-output (MIMO), ultra-wideband, envelope correlation coefficient (ECC), channel capacity loss (CCL), group delay, total active reflection coefficient (TARC).

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Section: Introductionmentioning

confidence: 99%

A Compact CPW-Fed Ultra-Wideband Multi-Input-Multi-Output (MIMO) Antenna for Wireless Communication Networks

et al. 2022

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“…It is noticed that antennas in [3] and [4] have a smaller size than the proposed one;however, they have only two elements and lower isolation. When the proposed antenna is compared with antennas in [5], [6], [18], and [19], it is observed that our proposed design has a smaller size and low correlation between elements. This indicates that the proposed antenna is advantageous because of the small size and high performance making it suitable for UWB systems.…”

Section: Diversity Performancementioning

confidence: 99%

Uwb Mimo High Diversity Antenna of Four Radiators With Single-Band-Rejection for Wireless Applications

Saad

Ibrahim

Khalaf

2022

Journal of Advanced Engineering Trends

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In this paper, Ultra-Wideband Multi-Input-Multi-Output (UWB-MIMO) antenna with band-notched features is introduced. The band notch of the antenna is designed by inserting T-strip into the radiating patch to eliminate the interference with WiMAX applications from 3 to 4 GHz. To improve the isolation and the diversity between the radiators, the antenna radiators are arranged orthogonally and decoupling structure is added between them. The proposed antenna has a compact sizeof 42 × 42 mm 2 and its bandwidth extends from 2.5 GHz up to 12 GHz. This antenna has been manufactured and its characteristics have been measured. The results showed that the proposed UWB-MIMO antenna has a good performance with bandwidth from 2.5 GHz to 12 GHz, excluding the notched band for WiMAX applications. Furthermore, it has high isolation with a value higher than 18 dB and with a correlation coefficient lowers than 0.05 through the operated frequency bands. These properties made it good candidate for diversity

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“…Size of the antenna, number of notches, bandwidth, number of notch structures, and ECC [19, 20] are some of the important parameters considered for the comparison. It can be observed from Table 2 that notch structures given in [21–25, 27–29] provide notches at a single frequency. EBG structures given in [26] provide notches at two different frequencies.…”

Section: Performance Comparison Of Different Antennasmentioning

confidence: 99%

Miniaturized four-port UWB MIMO antennas with triple-band rejection using single EBG structures

Thakur

Jaglan

Gupta

2021

Int. J. Microw. Wireless Technol.

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This research paper introduces a ultra-wideband (UWB) multiple input multiple output (MIMO)/diversity antenna with three rejected bands using one compact electromagnetic band gap (EBG) structure. The suggested EBG structure rejects three bands at WiMAX, WLAN, and the X-band within the passband of the UWB antenna. To achieve compactness in the conventional EBG structure, two via and square slots are introduced. This structure contributes to better impedance matching by using tapered feedline and slots in the radiating patch. To improve the isolation among all four compact UWB monopoles, decoupling strips are extended from the ground plane. Furthermore, the |S21| is below 17 dB in between the antenna elements and the envelope correlation coefficient is below 0.5, which are tolerable values within the UWB range. Furthermore, different MIMO/diversity characteristics are also discussed. An FR-4 substrate with dimensions of 38 × 45 × 1.6 mm3 is used for the fabrication of the suggested structure.

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A WLAN band-notched compact four element UWB MIMO antenna

Cited by 36 publications

References 16 publications

A Compact CPW-Fed Ultra-Wideband Multi-Input-Multi-Output (MIMO) Antenna for Wireless Communication Networks

A Compact CPW-Fed Ultra-Wideband Multi-Input-Multi-Output (MIMO) Antenna for Wireless Communication Networks

Uwb Mimo High Diversity Antenna of Four Radiators With Single-Band-Rejection for Wireless Applications

Miniaturized four-port UWB MIMO antennas with triple-band rejection using single EBG structures

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