Dielectric resonator antenna with top loaded parasitic strip elements for dual‐band operation

Iqbal, Amjad; Bouazizi, Amal; Kundu, Surajit; Elfergani, Issa; Rodrı́guez, Jonathan

doi:10.1002/mop.31876

Cited by 29 publications

(18 citation statements)

References 14 publications

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“…10 is the maximum DG with selection combining probability level 1% ρ is the correlation efficiency approximate expression It is observed from Figure 15 that the diversity gain in the entire operating band is above 9.90 dBi from 26.71 GHz to 28.91 GHz. Figure 16 shows the mean efficient gain and multiplexing efficiency in terms of frequency, clearly with peak mean effective gain (MEG) value of −4 dB and −1 dB multiplexing A dual-band cylindrical dielectric resonator antenna is proposed in [22], in which the miniaturization and dual-band frequency activity are accomplished by loading circular copper strips on top of the CDA with a maximum gain of 5.6 dBi. As a method of miniaturization, a square dielectric resonator is fitted with a magnetic LC resonator.…”

Section: Resultsmentioning

confidence: 99%

Improved Isolation Metamaterial Inspired Mm-Wave Mimo Dielectric Resonator Antenna for 5g Application

Nimmagadda¹

2020

PIER C

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A rectangular Dielectric Resonator Antenna (DRA) four element Multiple in Multiple Out (MIMO) is proposed for 5G application, and each element is supplied with slot-coupled microstrip feed. The entire construction has a dimension of 20 mm × 40 mm. Four Dielectric Resonators are mounted exactly above the slot. In order to improve the isolation, metamaterial is printed on top of the dielectric resonators, which move away the solidest coupling fields. As the metamaterial structure interacts with electromagnetic fields, field distributions are disturbed which results in reduction of coupled fields. Since the metamaterials are printed on top of the dielectric resonator, the proposed antenna structure has the simplest and compact design. The proposed structure is operating with an impedance bandwidth of 2.23 GHz with operating range from 26.71 GHz to 28.91 GHz, which covers the 28 GHz (27.5 GHz-28.35 GHz) band allotted by Federal Communications Commission (FCC) for 5G application. With all four-port excitation, the proposed structure shows a broadside radiation pattern with gain above 7 dBi in the entire operating bands. The Envelope Correlation Coefficient (ECC) for operating bands is within the target value. They are designed and fabricated to validate the proposed antenna. The simulated and measured values are nearly equal, which means that the proposed MIMO DRA is the right choice for mm-Wave 5G implementation.

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Section: Resultsmentioning

confidence: 99%

Improved Isolation Metamaterial Inspired Mm-Wave Mimo Dielectric Resonator Antenna for 5g Application

Nimmagadda¹

2020

PIER C

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“…We know that there is always some coupling associated with the nearby Antennas. The coupling between the nearby antennas is modeled by LC series lumped elements [22]. The value of each component of the system is shown in Fig.…”

Section: A Design Evolutionmentioning

confidence: 99%

Wideband Circularly Polarized MIMO Antenna for High Data Wearable Biotelemetric Devices

et al. 2020

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This paper presents a miniaturized circularly polarized multiple-input multiple-output (MIMO) antenna for wearable biotelemetric devices. The proposed MIMO antenna consists of four elements, which are placed orthogonally to the adjacent elements. The proposed antenna has a wideband response [10-dB bandwidth of 2210 MHz (fractional bandwidth (FBW) = 92.08%) in free space and 10-dB bandwidth of 2200 MHz (FBW = 91.66%) when worn on human-body], this frequency range covers the important and unlicensed industrial, scientific and medical (ISM) band (2.40-2.48 GHz). The antenna exhibits a wideband 3-dB circularly polarized bandwidth of 1300 MHz (FBW = 54.16%) and 1040 MHz (FBW = 43.33%) in free space and when worn on the body, respectively. The optimized antenna in free space (on-body) has an envelop correlation coefficient (ECC) less than 0.21 (0.23), a diversity gain (DG) greater than 9.77 dB (9.71 dB), a multiplexing efficiency (ME) greater than −0.85 dB (−0.63 dB), and a channel capacity loss (CCL) less than 0.13 bps/Hz (0.13 bps/Hz). The stable radiation, high gain, high efficiency, and good MIMO properties in free space and on human-body make the proposed antenna a suitable choice for use in high data wearable biotelemetric devices. INDEX TERMS Circularly polarized antenna, MIMO antenna, wearable antenna, wearable biotelemetric devices, wireless body-area networks (WBAN).

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“…The simulated and measured results of Mode 1 are shown in Figures 3 and 4. In Mode 1, the CDRA is excited through a rectangular slot (acting as a horizontal magnetic dipole) [30]- [31] for generating the HEM x 11δ mode of the CDR at 3.5 GHz. The current distribution of the ground plane of the antenna shows a somehow uniform current distribution around the corners of the slot, but most of the current lies on the terminating side of the transmission line which enhances HEM x 11δ mode excitation, as shown in Figure 3(b).…”

Section: Modementioning

confidence: 99%

Dielectric resonator antenna with reconfigurable polarization states

Iqbal

Waly

Smida

et al. 2021

IET Microwaves Antenna & Prop

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This study presents a simple and low-profile cylindrical dielectric resonator antenna (CDRA) for the fifth-generation (5G) band (3.5 GHz) with switchable polarization. The antenna can operate with linear or circular polarization (right-handed circular polarization [RHCP] or left-handed circular polarization [LHCP]) by changing the states of the PIN diodes below the CDRA, while keeping the same operating frequencies. The antenna operates at three modes (Mode 1, Mode 2, and Mode 3). It exhibits linear polarization in Mode 1, RHCP in Mode 2, and LHCP in Mode 3. The 10-dB bandwidths of 750 MHz (3.1-3.85 GHz), 950 MHz (3.03-3.98 GHz), and 960 MHz (3.03-3.99 GHz) are noted for Mode 1, Mode 2, and Mode 3, respectively. The 3-dB axial ratio bandwidth of 22.2% (3.09-3.86 GHz) and 21.4% (3.08-3.82 GHz) is achieved for Mode 2 and Mode 3, respectively.The reported antenna has high gain ( >5.25 dBi for all operating modes) and high radiation efficiency ( >79.8% for all operating modes). The proposed antenna is suitable for use in polarization diversity applications.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Dielectric resonator antenna with top loaded parasitic strip elements for dual‐band operation

Cited by 29 publications

References 14 publications

Improved Isolation Metamaterial Inspired Mm-Wave Mimo Dielectric Resonator Antenna for 5g Application

Improved Isolation Metamaterial Inspired Mm-Wave Mimo Dielectric Resonator Antenna for 5g Application

Wideband Circularly Polarized MIMO Antenna for High Data Wearable Biotelemetric Devices

Dielectric resonator antenna with reconfigurable polarization states

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