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Dielectric resonator antenna

About: Dielectric resonator antenna is a research topic. Over the lifetime, 8199 publications have been published within this topic receiving 111090 citations. The topic is also known as: DRA.


Papers
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Journal ArticleDOI
TL;DR: In this article, the authors present a theoretical analysis of the guide-wavelength/dielectric constant relationship for the EH-11 mode on a dielectric rod.
Abstract: The paper is divided into four sections, each dealing with a specific aspect of the current research program in the Department of Electrical Engineering at Sheffield University. Section I deals with the radiation from a cylindrical surface-wave resonator. Section II presents some numerical results obtained by an electronic computer of the guide-wavelength/dielectric constant relationship for the EH_{11} mode on a dielectric rod. Section III deals with the coupling between two adjacent surface waveguides. Parallel dielectric sheets and parallel rods are both discussed theoretically. Section IV presents the theory of a new form of surface-wave launching antenna, including an evaluation of its hunching efficiency.

28 citations

Journal ArticleDOI
TL;DR: In this paper, an antisymmetric trapped mode on a symmetric metamaterial resonator is experimentally demonstrated, where an active electronic device is used to break the electrical symmetry and therefore to generate this trapped mode.
Abstract: The excitation of an antisymmetric trapped mode on a symmetric metamaterial resonator is experimentally demonstrated. We use an active electronic device to break the electrical symmetry and therefore to generate this trapped mode on a symmetric spilt ring resonator. Even more, with such a tunable mode coupling resonator, we can precisely tune the resonant mode frequency. In this way, a shift of up to 15 percent is observed.

28 citations

Journal ArticleDOI
TL;DR: In this article, a dielectric resonator antenna (DRA) with a reconfigurable radiation pattern capability is presented, which achieves 360° pattern reconfigurability with a minimum number of diodes.
Abstract: In this article, a novel design of dielectric resonator antenna (DRA) with a reconfigurable radiation pattern capability is presented. Reconfigurability in the azimuth plane is achieved by symmetrically placing six electromagnetic bandgap (EBG) sectors around the DRA. Each sector is composed of 26 circular-shaped mushroom-like EBG unit cell. In order to achieve 360° pattern reconfigurability with a minimum number of diodes, a network of metallic veins printed on a conductor-backed dielectric slab is used to group and connect the vias in each EBG sector. In addition, a switching p-i-n diode is integrated to the circuit to control the beam steering in the entire azimuth plane toward the respective desired sector by turning on and off the diode. Sixty GHz DRA prototype incorporating the EBG switching circuit is fabricated and tested. Results show 360° pattern reconfigurability in the azimuth plane, with a realized gain of 4.2 dBi, and less than −16 dB impedance matching level over the desired bandwidth are achieved.

28 citations

Journal ArticleDOI
TL;DR: In this article, a novel design of compact dielectric resonator antenna (DRA) that is dedicated to ultrawideband applications such as digital video broadcasting-handheld (DVB-H) is presented.
Abstract: This letter presents a novel design of compact dielectric resonator antenna (DRA) that is dedicated to ultrawideband applications such as digital video broadcasting-handheld (DVB-H). The dimensions of the radiation element are lambda0/7 times lambda0/13 times lambda0/28 at 466 MHz. A miniaturization technique has been used in order to reduce the antenna size, and a parametric analysis of the antenna is performed. The measured results agree well with the simulated ones. The proposed antenna offers a bandwidth of 70% around 700 MHz for -8 dB impedance matching bandwidth definition and covers the Ultra High Frequency (UHF) IV, V and Global System for Mobile communications (GSM) bands.

28 citations

Journal ArticleDOI
TL;DR: In this article, a 1/spl times/2 linear cylindrical resonator antenna array with an aperture-coupled source was studied at the fundamental broadside TM/sub 110/mode.
Abstract: A 1/spl times/2 linear cylindrical resonator antenna array is studied experimentally. The DR antenna is excited by an aperture-coupled source and is operated at the fundamental broadside TM/sub 110/ mode. The input impedance, the radiation pattern, the antenna gain, and the mutual coupling of the array are studied. The results are compared with those of a single element. >

28 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023101
2022273
2021181
2020224
2019254
2018247