Substrate size selection of microstrip‐fed cylindrical dielectric resonator antennas for lowering the cross‐polarisation

2019 ◽  
Vol 13 (2) ◽  
pp. 246-251 ◽  
Author(s):  
Anuj Kumar Ojha ◽  
Praveen Kumar Ambattu Vijayaraghavan
Keyword(s):  
Dielectric Resonator ◽  
Dielectric Resonator Antennas ◽  
Size Selection ◽  
Substrate Size ◽  
The Cross ◽  
Selection Of

scholarly journals Rapid Prototyping of Bio-Inspired Dielectric Resonator Antennas for Sub-6 GHz Applications

Micromachines ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 1046
Author(s):  
Valeria Marrocco ◽  
Vito Basile ◽  
Ilaria Marasco ◽  
Giovanni Niro ◽  
Luigi Melchiorre ◽  
...  
Keyword(s):  
Dielectric Resonator ◽  
Ground Plane ◽  
Dimensional Accuracy ◽  
Dielectric Resonator Antenna ◽  
Scattering Parameter ◽  
Dielectric Resonator Antennas ◽  
Close Proximity ◽  
Micro Features ◽  
Spiral Surface ◽  
Selection Of

Bio-inspired Dielectric Resonator Antennas (DRAs) are engaging more and more attention from the scientific community due to their exceptional wideband characteristic, which is especially desirable for the implementation of 5G communications. Nonetheless, since these antennas exhibit peculiar geometries in their micro-features, high dimensional accuracy must be accomplished via the selection of the most suitable fabrication process. In this study, the challenges to the manufacturing process presented by the wideband Spiral shell Dielectric Resonator Antenna (SsDRA), based on the Gielis superformula, are addressed. Three prototypes, made of three different photopolymer resins, were manufactured by bottom-up micro-Stereolithography (SLA). This process allows to cope with SsDRA’s fabrication criticalities, especially concerning the wavy features characterizing the thin spiral surface and the micro-features located in close proximity to the spiral origin. The assembly of the SsDRAs with a ground plane and feed probe was also accurately managed in order to guarantee reliable and repeatable measurements. The scattering parameter S11 trends were then measured by means of a Vector Network Analyzer, while the realized gains and 3D radiation diagrams were measured in the anechoic chamber. The experimental results show that all SsDRAs display relevant wideband behavior of 2 GHz at −10 dB in the sub-6 GHz range.

scholarly journals Dielectric Resonator Antennas: Basic Concepts, Design Guidelines, and Recent Developments at Millimeter-Wave Frequencies

2016 ◽  
Vol 2016 ◽  
pp. 1-20 ◽  
Author(s):  
S. Keyrouz ◽  
D. Caratelli
Keyword(s):  
Millimeter Wave ◽  
Dielectric Resonator ◽  
Design Guidelines ◽  
Dielectric Resonator Antennas ◽  
Antenna Performance ◽  
Literature Overview ◽  
Radiation Properties ◽  
Recent Developments ◽  
Selection Of ◽  
Made In

An up-to-date literature overview on relevant approaches for controlling circuital characteristics and radiation properties of dielectric resonator antennas (DRAs) is presented. The main advantages of DRAs are discussed in detail, while reviewing the most effective techniques for antenna feeding as well as for size reduction. Furthermore, advanced design solutions for enhancing the realized gain of individual DRAs are investigated. In this way, guidance is provided to radio frequency (RF) front-end designers in the selection of different antenna topologies useful to achieve the required antenna performance in terms of frequency response, gain, and polarization. Particular attention is put in the analysis of the progress which is being made in the application of DRA technology at millimeter-wave frequencies.

Terahertz Magnetic Mirror Realized with Dielectric Resonator Antennas

2015 ◽  
Vol 27 (44) ◽  
pp. 7137-7144 ◽  
Author(s):  
Daniel Headland ◽  
Shruti Nirantar ◽  
Withawat Withayachumnankul ◽  
Philipp Gutruf ◽  
Derek Abbott ◽  
...  
Keyword(s):  
Dielectric Resonator ◽  
Magnetic Mirror ◽  
Dielectric Resonator Antennas

scholarly journals Predictive framework for codend size selection of brown shrimp (Crangon crangon) in the North Sea beam-trawl fishery

PLoS ONE ◽  
2018 ◽  
Vol 13 (7) ◽  
pp. e0200464 ◽  
Author(s):  
Juan Santos ◽  
Bent Herrmann ◽  
Daniel Stepputtis ◽  
Claudia Günther ◽  
Bente Limmer ◽  
...  
Keyword(s):  
North Sea ◽  
Brown Shrimp ◽  
Beam Trawl ◽  
Crangon Crangon ◽  
Size Selection ◽  
Trawl Fishery ◽  
The North ◽  
Sea Beam ◽  
The North Sea ◽  
Selection Of
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