Wideband dielectric resonator terahertz reflectarray

Yi, Huan; Qu, Shi‐Wei; Chan, Chi Hou

doi:10.1109/compem.2015.7052631

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…The individual element is similar to dielectric resonator antennas (DRA) that provides the benefits of lower loss, relatively wider bandwidth, higher efficiency, and smaller mutual coupling between elements [8, 9]. Therefore, the dielectric resonator reflectarrays have the potentials of offering wider bandwidth and higher gain [10]. However, the manufacturing processes for the dielectric resonator reflectarrays are generally cumbersome and do not make this approach attractive.…”

Section: Introductionmentioning

confidence: 99%

Three‐dimensional printed millimetre wave dielectric resonator reflectarray

Zhang

2017

IET Microwaves, Antennas & Propagation

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Reflectarray antennas have attracted extensive attention due to their low loss, high gain, compact volume, and their excellent abilities to control the radiated beam. The use of dielectric resonators as the reflectarray elements minimises the ohmic loss and the coupling between elements. This study uses fused deposition modelling (FDM) three‐dimensional (3D) printing rapidly prototyping a low cost and light‐weight dielectric resonator reflectarray. The demonstrated reflectarray is composed of 625 3D printed dielectric resonator elements to control the reflected phase over the reflector surface. The total size is 12 × 12 cm2 and the mass is 67 g. Measurements show that this reflectarray provides 28 dBi gain at 30 GHz when offset fed by a Ka‐band horn antenna. This work demonstrates the potential of FDM for millimetre wave (mm‐wave) applications. The new 3D printing approach can be deployed for high‐gain mm‐wave antenna fabrication with significantly reduced labour time and material costs.

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Section: Introductionmentioning

confidence: 99%

Three‐dimensional printed millimetre wave dielectric resonator reflectarray

Zhang

2017

IET Microwaves, Antennas & Propagation

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“…reducing the size, increasing the radiation gain, and enhancing the bandwidth [11][12][13][14][15][16]. Therefore, by introducing all-dielectric metamaterial into reflectarray antenna, the wider band, higher gain and lower cost reflectarray antennas can be realized [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, the polymer-jetting 3D printed technology is utilized to fabricate the dielectric reflectarray antennas, which can realize low-cost rapid prototyping. In contrast to the dielectric reflectarray antennas [17][18][19][20] that use high dielectric constant material, the reflectarray antennas that use conventional dielectric material with low dielectric constant are compatible with the polymer-jetting 3D-printed technique [21,22]. Nayeri et al [21] employed an all-dielectric 3D-printed metamaterial to achieve a reflectarray antenna with low cost and high gain.…”

Section: Introductionmentioning

confidence: 99%

Linear-to-circular polarization conversion based on all-dielectric 3D-printed metasurface for the application of broadband circularly polarized reflectarray antenna

Hao¹,

Wei²,

Zhao³

et al. 2020

J. Phys. D: Appl. Phys.

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A form of reflective half-wave plate based on all-dielectric 3D-printed metasurface is proposed in this paper. The element of the proposed reflective half-wave plate consists of a novel hexagonal prism dielectric resonator (HPDR), a square substrate and a ground plane. The designed HPDR element can effectively convert the incident linearly polarized (LP) waves into the reflected circularly polarized (CP) waves. Meanwhile, an approximately linear reflection phase ranging over 360 • of HPDR element is realized by varying the height of HPDR, which can significantly simplify the design procedure. In addition, based on the proposed HPDR element, a CP dielectric reflectarray antenna is designed. In order to verify the feasibility of the proposed design method, the dielectric reflectarray antenna with LP feeding is fabricated and measured, which can achieve a 1 dB gain bandwidth of 17.9% and a 3 dB axial-ratio bandwidth of 15%. A good agreement between the simulation and measurement is also observed. To the best of authors' knowledge, the broadband CP dielectric reflectarray antenna based on all-dielectric 3D-printed metasurface may be the first ever reported.

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