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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
More filters
Journal ArticleDOI
TL;DR: In this article, a novel ultrawideband (UWB) dielectric resonator antenna (DRA) with a band rejection at 5.8 GHz is proposed and studied.
Abstract: A novel compact ultrawideband (UWB) dielectric resonator antenna (DRA) with a band rejection at 5.8 GHz is proposed and studied. The antenna is composed of a thin monopole printed antenna loaded with DR that is housed into a dielectric substrate and an L-shaped parasitic strip connected to the ground plane. The L-shaped strip and metallic sheet are utilized to improve impedance bandwidth. A modified metallic sheet underneath the dielectric resonator has been applied to create a band rejection at frequency 5.8 GHz. The measurement results exhibit acceptable performances in terms of reflection coefficient, radiation pattern, efficiency, and realized gain.

40 citations

Journal ArticleDOI
TL;DR: In this paper, a dual-band hybrid resonator antenna with multifunctional beams is proposed, which uses the combination of a thin circular disk dielectric resonator (DR) and a T-shaped microstrip line.
Abstract: This paper presents a new compact independent dual-band hybrid resonator antenna with multifunctional beams. The proposed antenna uses the combination of a thin circular disk dielectric resonator (DR) and a T-shaped microstrip line. In this configuration, the T-shaped microstrip line performs the functions of a radiator and a feed for the DR. By optimizing the structure parameters, the hybrid structure allows not only the DR to resonate at one band with the broadside patterns but also the microstrip line to resonate at another band with the conical like patterns, and the two bands can be independently designed. Based on the above design concept, an antenna prototype suitable for wireless communication applications centered at 1.9 and 2.45 GHz was successfully designed, fabricated and tested.

40 citations

Patent
01 Jun 1993
TL;DR: In this article, a method of producing a microwave resonator consisting of a cavity comprising a cylindrical wall having an electrically conductive inner surface and containing a generally low-loss dielectric material of predetermined size is described.
Abstract: A method of producing a microwave resonator comprising a cavity (50) defined, at least in part, by a generally cylindrical wall (64) having an electrically conductive inner surface and containing a generally cylindrical piece of low loss dielectric material (22), characterised by forming a generally cylindrical piece of low loss dielectric material of predetermined size and placing same in a cavity to produce a microwave resonator which operates in a particular mode at a specific frequency at a particular temperature Microwave radiation corresponding to a further operating mode is then passed into the cavity and then the frequency corresponding to the further operating mode is searched for and measured A further generally cylindrical piece of dielectric material is produced by scaling from the first piece of dielectric material according to the ratio between the first and second frequencies Then, the diameter and/or height of the cavity is varied to compensate for manufacturing inaccuracies in the crystal so as to obtain an output frequency close to the desired output frequency

40 citations

Patent
14 Nov 1996
TL;DR: In this article, a radio frequency filter comprising several resonator circuits, such as duplex filter, is provided with a given passband, where signal frequencies generating spurious response, mirror frequencies, etc. can be effectively attenuated so that the filter comprises one more resonator circuit connected as a bandstop circuit.
Abstract: A radio frequency filter comprising several resonator circuits, such as duplex filter, is provides with a given passband. Signal frequencies generating spurious response, mirror frequencies, etc. can be effectively attenuated so that the filter comprises one more resonator circuit connected as a bandstop circuit. That comprises a transmission line resonator (Res), a series connection of an inductive element (MLIN2) and a capacitance diode (D), one end of the series connection being couples to a coupling point in the transmission line resonator, dividing it into two parts (TLIN1, TLIN2), and the other end being couples to the output connector (1) of the radio frequency filter. In addition, means are provided for carrying the direct voltage (V+) to the cathode of the capacitance diode, whereby the series resonance frequency changes according to the control voltage.

40 citations

Journal ArticleDOI
01 Apr 1966
TL;DR: In this paper, a method of measuring dielectric constants of materials in sheet form by insertion in a Fabry-Perot resonator is described, which is applicable at all frequencies and for materials with loss tangents less than one.
Abstract: A method of measuring dielectric constants of materials in sheet form by insertion in a Fabry-Perot resonator is described. By tilting the dielectric sheet at a slight angle with respect to the system axis, the reflected wave can be eliminated. The working formula for determing the dielectric constant then reduces to a simple linear relation involving the ratio of the mirror motion required to restore resonance to the thickness of the dielectric. The method is applicable at all frequencies where Fabry-Perot resonators can be used and for materials with loss tangents less than one. A table of measured values of common dielectrics is presented for 143 Gc/s and 343 Gc/s.

40 citations


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