Dual polarized triple‐band dielectric resonator based hybrid MIMO antenna for WLAN/WiMAX applications

Sahu, Nikesh Kumar; Das, Gourab; Gangwar, Ravi Kumar

doi:10.1002/mop.31102

Cited by 41 publications

(13 citation statements)

References 16 publications

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“…It radiates like the cross‐dipole and its resonant frequency has an inverse relationship with the permittivity and permeability of the antenna dielectric substrate 22 . The resonant frequency for DRA mode in the cylindrical ferrite discs is also inversely proportional to the permittivity and permeability of the antenna dielectric substrate, as shown in Equation ) 23

f_{{italicHEM}_{11 δ}} = \frac{6.321 v_{0}}{π D_{2} \sqrt{ε_{reff} + 2}} ([], 0.27 + 0.36 ((), \frac{D_{2}}{4 H_{italiceff}}) + 0.02 {(\frac{D_{2}}{4 H_{eff}})}^{2})

…”

Section: Antenna Designmentioning

confidence: 99%

Small ferrite‐loaded four‐petal‐shaped substrate integrated waveguide antenna with enhanced bandwidth

Tan

Cai

et al. 2021

Int J RF Microw Comput Aided Eng

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A ferrite‐loaded four‐petal‐shaped antenna with enhanced bandwidth is designed and fabricated. There are two layers in the antenna. A substrate integrated waveguide cavity is formed by a circular metallized via array on the lower substrate of the antenna. As a broadband radiating element, a four‐petal‐shaped radiation unit is etched on the bottom surface of the circular SIW cavity. By loading low‐loss ferrite discs with relatively high dielectric constant in the upper substrate layer as dielectric resonators, a relatively smaller broadband cross‐dipole antenna is realized. The measured results demonstrate that the working frequency band of the antenna is 1.83 to 3.53 GHz (63.4%) if the S11 is less than ‐10 dB. The antenna with the size of 0.29λmax × 0.29λmax has stable bidirectional radiation patterns with the average realized gain and radiation efficiency of 4.14 dBi and 94% in the working frequency range. Due to the characteristics of low cost, low profile, easy integration with planar circuit, the proposed antenna is suitable for wireless communication applications, such as CDMA, 4G, 5G, IMT‐2000, WiMAX, WiFi, and Bluetooth.

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f_{{italicHEM}_{11 δ}} = \frac{6.321 v_{0}}{π D_{2} \sqrt{ε_{reff} + 2}} ([], 0.27 + 0.36 ((), \frac{D_{2}}{4 H_{italiceff}}) + 0.02 {(\frac{D_{2}}{4 H_{eff}})}^{2})

…”

Section: Antenna Designmentioning

confidence: 99%

Small ferrite‐loaded four‐petal‐shaped substrate integrated waveguide antenna with enhanced bandwidth

Tan

Cai

et al. 2021

Int J RF Microw Comput Aided Eng

View full text Add to dashboard Cite

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“…Channel capacity loss (CCL) is the upper threshold of data rate at which signal can be constantly transmitted without incurring significant error . Mathematically, CCL can be defined by Equation (5) . For practical MIMO antenna operation, it is expected that the CCL of a MIMO antenna should lie below 0.4 bps/Hz …”

Section: Mimo Antenna Designmentioning

confidence: 99%

A DGS monopole antenna loaded with U‐shape stub for UWB MIMO applications

Hasan

Chu

Bashir

2019

Micro & Optical Tech Letters

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A defected ground structure‐based rectangular monopole antenna along with 2 × 2 and 4 × 4 multiple‐input multiple‐output (MIMO) antennas are presented. The proposed monopole antenna consists of a defected ground structure with two slits and a notch placed at optimum positions to increase the impedance bandwidth. Besides, the radiator is loaded with a U‐shape stub to improve the impedance matching of the antenna. The measured impedance bandwidth of the proposed monopole antenna is from 3.18 to 11.5 GHz. Time domain experiment is carried on to investigate the dispersion characteristics of the proposed antenna. Measurement results reveal that the proposed antenna can retain the transmitted pulse shape, ensuring dispersion‐free communication. Far‐field measurements confirm omnidirectional radiation patterns over the operating bandwidth. Moreover, MIMO performance of the proposed 2 × 2 and 4 × 4 antenna arrays are evaluated based on isolation, envelop correlation coefficient, diversity gain, and channel capacity loss. The proposed single monopole and MIMO versions of this antenna can be used in portable UWB communication devices.

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“…But advantages of CP in antennas swerved the researchers toward new domain of circularly polarized MIMO DRA. Very few articles 12‐18 have been reported in this domain. In Reference 12 the authors have proposed dual polarized triple band (2.21‐3.13, 3.40‐3.92, and 5.30‐6.10 GHz) MIMO DRA for WLAN/WiMAX applications.…”

Section: Introductionmentioning

confidence: 99%

Dual‐band circularly polarized MIMO DRA for sub‐6 GHz applications

Singhwal

Kanaujia

Singh

et al. 2020

Int J RF Microw Comput Aided Eng

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In this article, a dual‐band circularly polarized multiple‐input‐multiple‐output (MIMO) dielectric resonator antenna (DRA) is proposed for 3.5 and 5.5 GHz bands, both being located under 6 GHz. Known as sub‐6 (or as mid‐band), they provide good coverage and capacity in the newly targeted fifth‐generation (5G) systems. The proposed structure consists of two ring DRAs (RDRAs) etched on a 0.8 mm thick RT Duroid substrate. Measured impedance bandwidths in broadside direction are 3.1‐3.75 GHz (19%) and 5.3‐5.6 GHz (9.4%) and circular polarization (CP) bandwidths are 3.425‐3.6 GHz (5%) and 5.45‐5.55 GHz (2%), respectively. CP is achieved by exciting HE modes using two probes placed orthogonaly to each other, that is, at an azimuthal angular distance of 90∘. Varying the lengths of the probe allows achieving the necessary time‐phase quadrature between modes. Comparison between recent multiband circularly polarized MIMO DRAs and proposed prototype has revealed that CP bandwidth in both bands is one of the highlighting advantages of the present configuration.

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Dual polarized triple‐band dielectric resonator based hybrid MIMO antenna for WLAN/WiMAX applications

Cited by 41 publications

References 16 publications

Small ferrite‐loaded four‐petal‐shaped substrate integrated waveguide antenna with enhanced bandwidth

Small ferrite‐loaded four‐petal‐shaped substrate integrated waveguide antenna with enhanced bandwidth

A DGS monopole antenna loaded with U‐shape stub for UWB MIMO applications

Dual‐band circularly polarized MIMO DRA for sub‐6 GHz applications

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