Wideband High-Gain Millimetre-Wave Three-Layer Hemispherical Dielectric Resonator Antenna

Abdulmajid, Abdulmajid A.; Khamas, S.K.; Zhang, and Shiyu

doi:10.2528/pierc20032201

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…Abdulmajid et al . [46] in their paper excited a hemispherical DRA (HDRA) in TE 511 and TE 711 by using a cross-slot feeding mechanism. Though the HDRA is multilayer, this methodology is used here for wider bandwidth and not for enhanced gain.…”

Section: Gain Enhancement Techniquesmentioning

confidence: 99%

“…The groove causes an increase in the magnitude of the electrical field, thus increasing the bore sight gain of the antenna to 9.6 dBi. Abdulmajid et al [46] in their paper excited a hemispherical DRA (HDRA) in TE 511 and TE 711 by using a cross-slot feeding mechanism. Though the HDRA is multilayer, this methodology is used here for wider bandwidth and not for enhanced gain.…”

Section: Excitation Of Dra In Higher-order Modesmentioning

confidence: 99%

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Evolution of gain enhancement techniques in dielectric resonator antenna: applications and challenges

Harkare

Kothari

Bhurane

2023

Int. J. Microw. Wireless Technol.

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Dielectric resonator antennas (DRA) are advantageous due to their small size, high radiation efficiency, ease of excitation, and minimal metallic losses. Enhancing the gain of DRA will make them suitable for a variety of applications such as wireless communication technology. High-gain antennas are required for wireless communication to overcome the difficulties of high path loss. The researchers have presented numerous techniques, including stacked DRA, DRA array, and higher-order mode excitation for enhancing the gain. This article provides a comprehensive summary of the state of art techniques and geometries including stacking, frequency-selective surfaces superstrate, electromagnetic band gap structures, hybrid techniques, arrays, etc., for increasing DRA gain. Techniques to improve other parameters like bandwidth and radiation efficiency along with gain are also discussed. The challenges in each technique and the possible applications are presented. Based on the studies, it is observed that the DRA array technique is suitable for obtaining gains up to 19 dBi for radar-based applications. For low-profile DRA requirements, hybrid DRAs prove prolific in enhancing gain up to 16 dBi.

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Section: Gain Enhancement Techniquesmentioning

confidence: 99%

Section: Excitation Of Dra In Higher-order Modesmentioning

confidence: 99%

Evolution of gain enhancement techniques in dielectric resonator antenna: applications and challenges

Harkare

Kothari

Bhurane

2023

Int. J. Microw. Wireless Technol.

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“…Multiobjective optimization is therefore ideally suited to analyzing the performance tradeoffs of dielectric resonator shapes. While there are a wide collection of dielectric resonator configurations (e.g., multilayer structures [26], [27], varying feeds [28]), in this study the shapes were restricted to extruded 2D geometries -often referred to as 2.5D structures. These shapes are easier to fabricate and are much more common than fully 3D resonators.…”

Section: Optimization Setupmentioning

confidence: 99%

Dielectric Resonator Antenna Geometry-Dependent Performance Tradeoffs

Whiting

Campbell

Mackertich-Sengerdy

et al. 2021

IEEE Open J. Antennas Propag.

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A flexible shape generation technique (Surface Contour Shape Generation) is combined with multiobjective evolutionary optimization algorithms in order to synthesize geometrically-diverse dielectric resonator antennas and explore the impact geometry has on relevant performance metrics. It is shown that noncanonical shapes can improve gain and bandwidth when compared to conventional dielectric resonator antenna geometries. Previously described free-form techniques (such as the superformula) have demonstrated improved performance over canonical shapes, but are difficult to integrate with inversedesign. In contrast, the proposed shape generation technique is coupled with multiobjective optimization in order to illustrate the solution space tradeoffs between the various design goals. This technical approach is compatible with various feed designs, antenna performance parameters, and 3D printing techniques.

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Reconfigurable Circularly Polarized Hemispherical DRA Using Plasmonic Graphene Strips for MIMO Communications

et al. 2022

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Wideband High-Gain Millimetre-Wave Three-Layer Hemispherical Dielectric Resonator Antenna

Cited by 5 publications

References 17 publications

Evolution of gain enhancement techniques in dielectric resonator antenna: applications and challenges

Evolution of gain enhancement techniques in dielectric resonator antenna: applications and challenges

Dielectric Resonator Antenna Geometry-Dependent Performance Tradeoffs

Reconfigurable Circularly Polarized Hemispherical DRA Using Plasmonic Graphene Strips for MIMO Communications

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