Journal ArticleDOI
H-Shaped Dielectric Resonator Antenna for Wideband Applications
Xianling Liang,Tayeb A. Denidni +1 more
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TLDR
In this paper, a novel dielectric resonator antenna design is presented for wideband applications by using an optimized H-shaped across section and an optimized trapezoidal patch adhered on the concave surface of the resonator as a feeding mechanism, achieving an impedance bandwidth of about 62% (for VSWR les 2), covering the frequency range of 3.6-6.85 GHz.Abstract:
A novel dielectric resonator antenna design is presented for wideband applications in this letter. By using a dielectric resonator with an optimized H-shaped across section and an optimized trapezoidal patch adhered on the concave surface of the resonator as a feeding mechanism, an impedance bandwidth of about 62% (for VSWR les 2) , covering the frequency range of 3.6-6.85 GHz, is achieved. The measured results in terms of bandwidth and radiation pattern agree well with the simulated ones, confirming the theoretical design.read more
Citations
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Ultrawideband Dielectric Resonator Antenna With Broadside Patterns Mounted on a Vertical Ground Plane Edge
TL;DR: In this paper, a portable dielectric resonator antenna (DRA) design with broadside radiation is presented for ultrawideband wireless applications and narrow pulse sensor for breast cancer detections.
Journal ArticleDOI
Compact Asymmetrical T-Shaped Dielectric Resonator Antenna for Broadband Applications
Yang Gao,Zhenghe Feng,Li Zhang +2 more
TL;DR: In this article, a compact dielectric resonator antenna (DRA) for broadband applications is proposed by applying an optimized asymmetrical T-shaped DRA and an inverted-trapezoidal patch as a feeding mechanism, achieving an impedance bandwidth of about 75.1% covering the frequency range from 3.81 to 8.39 GHz.
Journal ArticleDOI
Hybrid ultrawideband dielectric resonator antenna and band-notched designs
Tayeb A. Denidni,Z. Weng +1 more
TL;DR: In this paper, a novel dielectric resonator antenna (DRA) is proposed for ultrawideband (UWB) applications, where a simple rectangular dielectoric resonator is excited by a bevel-shaped patch connected to a coplanar waveguide (CPW) feeding line.
Journal ArticleDOI
Broadband Bowtie Dielectric Resonator Antenna
Leboli Z. Thamae,Zhipeng Wu +1 more
TL;DR: In this article, a broadband dielectric resonator antenna, formed by carving out notches from cylindrical geometry to form bowtie shape and fed by coaxial probe on one of the notched sides, is presented.
Journal ArticleDOI
A Wideband Circularly Polarized Rectangular Dielectric Resonator Antenna Excited by an Archimedean Spiral Slot
Meng Zou,Jin Pan,Zaiping Nie +2 more
TL;DR: In this article, a wideband circularly polarized (CP) rectangular dielectric resonator antenna (DRA) was proposed to achieve a wide 3dB axial-ratio (AR) bandwidth of 25.5%.
References
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Journal ArticleDOI
Conical dielectric resonator antennas for wide-band applications
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.
Journal ArticleDOI
Design and analysis of multisegment dielectric resonator antennas
TL;DR: In this article, a detailed study of the effects of varying the dielectric insert parameters was carried out and useful guidelines were presented for the design of MSDRAs. And the MSDRA greatly facilitates the integration with a printed feed distribution network for use in a large array environment.
Journal ArticleDOI
Wide-band truncated tetrahedron dielectric resonator antenna excited by a coaxial probe
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.
Journal ArticleDOI
Conformal strip excitation of dielectric resonator antenna
TL;DR: In this paper, a new excitation scheme that employs a conducting conformal strip is proposed for dielectric resonator antenna (DRA) excitation, which is successfully demonstrated by using a hemispherical DRA whose exact Green function is found using the mode-matching method.
Journal ArticleDOI
Stacked annular ring dielectric resonator antenna excited by axi-symmetric coaxial probe
S.M. Shum,Kwai-Man Luk +1 more
Abstract: A stacked annular ring dielectric resonator (DR) antenna composed of commercially available dielectric resonators and exited by axi-symmetric coaxial probe is studied computationally using the finite-difference time-domain (FDTD) method. The numerical results are checked against experimental measurements, and good agreement is observed. It is demonstrated that the introduction of air-gaps between the two DR's and also between the driven DR and the ground plane can improve the impedance bandwidth of the antenna significantly. The effects of the air-gaps thickness on the return loss and the bandwidth are discussed. The far-fields are also calculated by applying the electromagnetic field equivalence principle. The antenna produces an end-fire radiation field similar to that of an electric monopole. >