New antennas with dielectric resonators of axial symmetry
17 Dec 2015-pp 139-142
TL;DR: In this paper, a new type of dielectric resonator antennas (DRAs) with axial symmetry is proposed for frequencies around 5.8 GHz, each element uses a high permittivity cylindrical resonator and a low permittivities resonator of a truncated cone shape.
Abstract: New type of dielectric resonator antennas (DRAs) with axial symmetry are proposed for frequencies around 5.8 GHz. Each element uses a high permittivity cylindrical resonator and a low permittivity resonator of a truncated cone shape. Two types of microstrip-fed DRAs were investigated. By coupling the resonance modes, the first type and the second type DRA exhibit fractional impedance bandwidth of 15.6% and 19.7%, respectively.
Citations
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01 Oct 2017
TL;DR: In this article, a pair of resonators with different sizes and dielectric constants are used to enhance the characteristics of the antenna elements for 5.8 GHz frequency band applications.
Abstract: Investigations on antenna array for 5.8 GHz frequency band applications are presented in this paper. In order to enhance the characteristics of the dielectric resonator antenna elements, a pair of resonators with different sizes and dielectric constants is used. The antenna elements are connected to four daughter-boards of Universal Software Radio Peripherals, which perform the signal processing required by the sources detection and beamforming.
Cites background from "New antennas with dielectric resona..."
...In order to improve the antenna characteristics dielectric resonators with such new shapes as truncated cone were proposed [4]....
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References
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TL;DR: In this paper, the authors present a historical review of the research carried out on dielectric resonator antennas (DRAs) over the last three decades and highlight major research activities in each decade.
Abstract: This article presents a historical review of the research carried out on dielectric resonator antennas (DRAs) over the last three decades. Major research activities in each decade are highlighted. The current state of the art of dielectric-resonator-antenna technology is then reviewed. The achievable performance of dielectric resonator antennas designed for compactness, wide impedance bandwidth, low profiles, circular polarization, or high gain are illustrated. The latest developments in dielectric-resonator-antenna arrays and fabrication techniques are also examined.
494 citations
TL;DR: In this article, a wideband dielectric resonator antenna with conical shape was designed by shape shaping of the materials and the excitation was considered to be a coaxial probe displaced from the cone axis.
Abstract: Wideband dielectric resonator antennas are designed by shaping the dielectric materials. New dielectric resonator antennas of conical shape are experimentally examined and some results are verified numerically. Four different cone shapes are considered. The excitation is considered to be a coaxial probe displaced from the cone axis. Two configurations show wideband performance. The split cone achieved about 50% impedance bandwidth. The radiation patterns are computed within the band to examine the effect of the different modes excited on the radiation patterns.
299 citations
TL;DR: In this article, a truncated tetrahedron dielectric resonator antenna is examined numerically and experimentally for the impedance match and the radiation patterns of the antenna.
Abstract: A truncated tetrahedron dielectric resonator antenna is examined numerically and experimentally. The tetrahedron base is an equilateral triangular over a ground plane and excited by a coaxial probe to provide a broad side radiation pattern. Three different configurations are analyzed: the truncated tetrahedron when the wide base is attached to the ground plane, the narrow base attached to the ground plane, and the equitriangular cylinder. Results are verified experimentally and numerically. The tetrahedron with narrow base attached to the ground plane achieves wide-band performance for the impedance match and the radiation patterns of about 40%.
169 citations
"New antennas with dielectric resona..." refers methods in this paper
...A further bandwidth increase (FBW=40%) was achieved by using an inverted tetrahedral DRA [6]....
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TL;DR: In this paper, a numerical study of split cylindrical dielectric resonator antennas on a conducting ground plane excited by a coaxial probe is presented, based on the method of moments for a body of revolution coupled to a wire.
Abstract: A numerical study of split cylindrical dielectric resonator antennas on a conducting ground plane excited by a coaxial probe is presented. The numerical solution is based on the method of moments for a body of revolution coupled to a wire. We consider in this study bandwidth enhancement for dielectric resonators excited in the HEM 11 and HEM 12 modes for the split dielectric cylinder. A wideband performance of about 35% has been achieved for the antenna and experimental measurements have verified this finding.
115 citations
"New antennas with dielectric resona..." refers background in this paper
...A probe-fed conical DRA with a fractional bandwidth of 9% was reported [4]....
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TL;DR: In this paper, a simple, compact, wideband rectangular dielectric resonator antenna (RDRA) is presented, where the bandwidth is enhanced using a proper tapered strip excitation from one side of the DR.
Abstract: -A simple, compact, wideband rectangular dielectric resonator antenna (RDRA) is presented. The bandwidth is enhanced using a proper tapered strip excitation from one side of the DR. The radiation characteristics are improved by adding a shorted narrow strip to the opposite side of the excitation. In addition, by using this shorted strip, further improvement of the bandwidth is obtained. A parametric study on the strip dimension is carried out. The proposed DRA with good radiation characteristics offers a measured bandwidth of 96% between 2.13 and 6.08 GHz for VSWR <; 2.
67 citations
"New antennas with dielectric resona..." refers background in this paper
...Moreover, higher FBW around 96% was recently reported for rectangular DRA [7]....
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