Design of a reflectarray antenna at 300 GHz based on cells with three coplanar dipoles

Florencio, Rafael; Boix, Rafael R.; Encinar, José A.

doi:10.1109/aps.2013.6711335

Cited by 6 publications

(4 citation statements)

References 3 publications

(4 reference statements)

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“…The active dipole element resonates at 300 GHz with maximum gain of 9.12 dBi and also provides a bandwidth of 46 GHz from 294 GHz to 340 GHz as shown in Figure 3. 180 µm D 5 170 µm D 6 162 µm The optimization of gain and bandwidth with different numbers of directors. Further enhancement in the gain and directivity can be obtained with the modification of substrate in the form of a lens, and this technique is discussed in Section 3.…”

Section: Elementsmentioning

confidence: 99%

“…The design and criteria to enhance the gain and bandwidth of the antennas at higher frequencies are detailed in [4]. For the bandwidth extension and reduction in the reflection losses, the novel technologies in the field of reflect array antennas at 300 GHz were developed in [5,6]. Since it is hard to limit the reflections around the high frequency resonances, there will be poor reflection loss characteristics at 300 GHz.…”

Section: Introductionmentioning

confidence: 99%

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Design of Sub-THZ Beam Scanning Antenna Using Luneburg Lens for 5g Communications or Beyond

Nisamol¹,

Ansha²,

Abdulla³

2020

PIER C

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This work presents the design and simulation of a beam scanning antenna at 300 GHz using Luneburg lens for 5th generation communication applications or beyond. The basic antenna consists of a highly directional Yagi-Uda antenna with lens shaped configuration (substrate lens antenna-SLA) and designed using multiple parallel elements such as one reflector and one driven element with 6 directors. The SLA is focused by Luneburg lens, which is modeled using a unique foam material AirexR82 with relative dielectric constant of 1.12, and it is pressed to realize different dielectric constants in order to obey the index law inside the lens. The final nine-element array of SLA integrated with Luneburg lens provides a 50% increase in bandwidth compared with conventional Yagi-Uda antenna along with an increase in the gain of 31.3% compared with single SLA. The designed model can achieve a beam scan coverage up to 146 • with a maximum gain of 17.1 dBi and an estimated efficiency of 92.9%. The beam scanning antenna provides a wide bandwidth of 83 GHz starting from 289 GHz to 372 GHz. The analysis of the proposed antenna is done in CST suite and is validated using HFSS software.

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Section: Elementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of Sub-THZ Beam Scanning Antenna Using Luneburg Lens for 5g Communications or Beyond

Nisamol¹,

Ansha²,

Abdulla³

2020

PIER C

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“…Posteriormente, três dipolos paralelos com comprimentos diferentes são avaliados. Essa geometria foi proposta por [6], [7] e [8] visando aumentar a faixa de variação de fase. Aqui, células são projetadas na frequência de 8,6 GHz, que corresponde a faixa de frequência alocada para a exploração da terra a partir de satélites.…”

Section: Introductionunclassified

Estudo de Espalhadores em Banda X para Aplicação em Rede Refletora

Santos,

Bilher,

Schlosser

et al. 2023

Anais Do XLI Simpósio Brasileiro De Telecomunicações E Processamento De Sinais

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Resumo-Neste artigo, duas topologias de elementos espalhadores são analisadas para aplicação em rede refletora (RA) embarcada em nanossatélite padrão 8U. As geometrias avaliadas para as metalizações impressas são: patch quadrado e dipolos. A rede possui dimensão 200 mm × 200 mm, o que permite a conformação da estrutura sobre a face do nanossatélite durante o lançamento. As curvas de fase para cada célula são obtidas a partir de simulações paramétricas no software Ansys HFSS. Diferentes parâmetros são avaliados na definição da melhor curva de fase. Por fim, uma rede refletora linearmente polarizada é projetada para fins de validação.

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“…It was found that a reflection phase range of greater than 360° was easily obtainable by cascading multiple hexagonal rings [4] concentrically. Dipole was used for reflectarray design in [13], [14], and it was found that placing a couple of dipolar strips in parallel had made possible linear phase response with a phase range of more than 360°.…”

Section: Introductionmentioning

confidence: 99%