Topic
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 published on a yearly basis
Papers
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TL;DR: In this article, a single-fed elliptic dielectric resonator antenna is designed for circular polarization and a coaxial probe is chosen with the proper parameters to achieve wideband matching and good circular polarization properties.
Abstract: A single-fed elliptic dielectric resonator antenna is designed for circular polarization. The feed is a coaxial probe chosen with the proper parameters to achieve wideband matching and good circular polarization properties. The analysis is performed numerically using WIPL-D. The single-fed DRA achieves 3.5% circular polarization bandwidth and 14% matching bandwidth. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 37: 454–456, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10948
74 citations
TL;DR: Low-loss dielectric resonators as mentioned in this paper can be made to perform the same functions as waveguide filters, but are, in contrast, very small, stable and lightweight, and their losses are dominated by the loss tangent, and only in small part by metallic losses.
Abstract: High-quality resonating elements are the key to the function of most microwave circuits and systems. They are fundamental to the operation of filters and oscillators, and the performance of these circuits is primarily limited by the resonator quality factor. At microwave frequencies, the quality factor (Q) of metal transmission line resonant circuits is proportional to volume. As a result, waveguide structures are often employed to increase Q at the expense of size, weight, and cost. Dielectric resonators overcome these limitations due to the fact that their losses are dominated by dielectric loss (loss tangent), and only in small part to metallic losses (housing). Dielectric losses are improving constantly, whereas metal losses, with the exception of superconductors, have remained substantially the same. These resonators can be made to perform the same functions as waveguide filters, but are, in contrast, very small, stable and lightweight. The popularization of low-loss dielectric resonators roughly coincides with the miniaturization of many of the other associated elements of most microwave circuits. When taken together, these technologies permit the realization of small, reliable, lightweight and stable microwave systems.
74 citations
TL;DR: In this paper, a compact dual-polarized dielectric resonator antenna (DRA) fed by a coplanar waveguide (CPW) is presented, which adopts the even and odd modes of a CPW structure, two orthogonal polarizations with good isolation can be excited in the rectangular DRA by a single feeding aperture.
Abstract: A compact dual-polarized dielectric resonator antenna (DRA) fed by a coplanar waveguide (CPW) is presented. By adopting the even and odd modes of a CPW structure, two orthogonal polarizations with good isolation can be excited in the rectangular DRA by a single feeding aperture. The measured 10-dB impedance bandwidths of the two polarizations are 260 (7%) and 440 MHz (11.6%), respectively. Over the operating bandwidth, the measured isolation between two ports is better than 25 dB. A prototype was fabricated and tested. Good agreement between the measured and simulated results is obtained.
74 citations
TL;DR: In this paper, a novel wideband hybrid dielectric resonator antenna structure consisting of a rectangular D resonator (DR) and a coplanar waveguide (CPW) inductive slot is proposed.
Abstract: A novel wideband hybrid dielectric resonator antenna structure comprises a rectangular dielectric resonator (DR) and a coplanar waveguide (CPW) inductive slot is proposed. In this configuration, the CPW inductive slot simultaneously acts as an effective radiator and the feeding structure of the DR. Dual resonances of the two radiators are merged to extend the antenna's bandwidth. A parametric study is performed to optimize the antenna performance and a prototype for 5-GHz WLAN application has been built and tested.
73 citations
TL;DR: In this paper, a new configuration of dielectric resonator antenna is proposed to achieve dual-band operation or wider bandwidth, which consists of two rectangular dielectrics displaced near two edges of a single slot in the ground plane of a microstrip line.
Abstract: To achieve dual-band operation or wider bandwidth, a new configuration of dielectric resonator antenna is proposed. This structure consists of two rectangular dielectric resonators displaced near two edges of a single slot in the ground plane of a microstrip line. The measured impedance and radiation patterns for two cases are presented. The results for typical examples indicate that an impedance bandwidth twice that of a single element or dual-frequency operation at two separate bands can be achieved.
73 citations