Dual‐band MIMO dielectric resonator antenna for WiMAX/WLAN applications

Khan, Asad; Jamaluddin, Mohd Haizal; Aqeel, Sajid; Nasir, Jamal; Kazim, Jalil ur Rehman; Owais, Owais

doi:10.1049/iet-map.2015.0745

Cited by 107 publications

(84 citation statements)

References 28 publications

(33 reference statements)

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“…From Figure C, it can be observed that the surface current is mainly concentrated over the excited port. As a result, the proposed radiator achieves high isolation between port 1 and port 2 …”

Section: Investigation Of Proposed Antennamentioning

confidence: 95%

Dielectric resonator based circularly polarized MIMO antenna with polarization diversity

Das

Sharma

Gangwar

2018

Micro & Optical Tech Letters

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In this article, a dual sense dual port circularly polarized cylindrical dielectric resonator antenna (CDRA) is discussed for multiple input multiple output (MIMO) applications. Three exclusive features of the proposed radiator are (i) modified circule‐shaped aperture generates circular polarization for both the ports; (ii) proposed structure can generate left‐hand circular polarization (LHCP) and right‐hand circular polarization (RHCP) that depends on feed port selection; (iii) by introducing the concept of polarization diversity (LHCP/RHCP) and defected ground structure (DGS) between the two radiator, isolation is improved. A prototype of proposed radiator is fabricated and experimentally tested to authenticate the simulated results. The fractional impedance bandwidth for port 1 and port 2 is 15.1% and 14.9%, respectively. Within the targeted operating band, the isolation is better than −25 dB between the ports. Different diversity performance parameters are also calculated and they are also lie within their optimum limit. The proposed MIMO antenna is suitable for WLAN (5.5/5.8 GHz) applications.

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Section: Investigation Of Proposed Antennamentioning

confidence: 95%

Dielectric resonator based circularly polarized MIMO antenna with polarization diversity

Das

Sharma

Gangwar

2018

Micro & Optical Tech Letters

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“…It vastly satisfies the demand of below 0.5 . The diversity gain (DG) is another parameter to evaluate the performance of MIMO antenna and it can be calculated as:

italicDG = 10 \sqrt{1 - {|0.99 ρ_{e}|}^{2}}

…”

Section: Resultsmentioning

confidence: 99%

Dual‐band and enhanced‐isolation MIMO antenna with L‐shaped meta‐rim extended ground stubs for 5G mobile handsets

Duan

et al. 2019

Int J RF Microw Comput Aided Eng

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A novel compact planar dual‐band multiple input multiple output (MIMO) antenna with four radiating elements for 5G mobile communication is proposed. Each radiating element has a planar folded monopole, which is surrounded by L‐shaped meta‐rim extended ground stubs. The compact folded arms act as the main radiating elements, while combined with the L‐shaped meta‐rim stubs, the proposed antenna forms multiple resonances so as to achieve dual‐band coverage. The simulated and measured results show that the proposed antenna has two wide bands of −6 dB return loss, consisting of 1.6 to 3.6 and 4.1 to 6.1 GHz, respectively. Without any additional isolation structure between the elements, the isolation for the proposed 2 × 2 MIMO antenna in both desired bands can be achieved better than 12 dB. The measured results show that the proposed MIMO antenna with good performance, that is, stable radiation patterns, high efficiencies, low specific absorption ratio (SAR) to human tissues, is suitable for WLAN/LTE, 4G and future 5G mobile phone applications.

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“…The 3‐db bandwidth is not significantly affected by air gap . Air gap is also used for better impedance matching . Effect of copper strips on simulated IBW and gain of DRA are shown in Figures and , respectively.…”

Section: Antenna Design and Operating Principlementioning

confidence: 99%

Dual‐port MIMO dielectric resonator antenna for WLAN applications

Singhwal

Kanaujia

Singh³

et al. 2019

Int J RF Microw Comput Aided Eng

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A dual‐port multiple‐input multiple‐output (MIMO) dielectric resonator antenna (DRA) for 5 GHz IEEE (802.11a/h/j/n/ac/ax) is discussed in this article. Two prototypes of single feed DRA and dual feed MIMO DRA are fabricated and measured results are compared with the simulated data. The proposed single feed DRA and dual feed MIMO DRA exhibits wide impedance bandwidth (IBW). Antennas have been fabricated on Rogers RT Duroid substrate with Eccostock made DRA placed over the substrate. DRAs are excited by aperture coupled feed to achieve wide bandwidth and high efficiency. The measured IBW of uniport DRA and dual‐port MIMO DRA are 26.6% (4.75‐6.21 GHz) and 27.5% (4.7‐6.2 GHz) respectively. Maximum gain of the antenna is 7.4 dBi. The results of the antennas are in good agreement with simulated data and they are suitable for WLAN applications. These antennas are also compact with area of substrate 32.8 cm2.

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Dual‐band MIMO dielectric resonator antenna for WiMAX/WLAN applications

Cited by 107 publications

References 28 publications

Dielectric resonator based circularly polarized MIMO antenna with polarization diversity

Dielectric resonator based circularly polarized MIMO antenna with polarization diversity

Dual‐band and enhanced‐isolation MIMO antenna with L‐shaped meta‐rim extended ground stubs for 5G mobile handsets

Dual‐port MIMO dielectric resonator antenna for WLAN applications

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