On Surface Wave Propagation Characteristics of Porosity-Based Reconfigurable Surfaces

Chu, Zhiyuan; Wong, Kai-Kit; Tong, Kin‐Fai

doi:10.23919/apmc55665.2022.9999806

Cited by 5 publications

(3 citation statements)

References 9 publications

(8 reference statements)

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“…Copper pins with the same radius as the circular cavity are used in the middle customized surface to demonstrate the reconfigurability of the surface. Although the electrical conductivity of the copper pins used in the experiment is different from common liquid metals such as Galinstan and the sliver ink used in the 3D-printed geometry, it has been verified that the conductivity of pins does not significantly affect the measured results 24 . The specific parameter values are listed in TABLE 1.…”

Section: Measurement Setupmentioning

confidence: 93%

Investigation in Surface Wave Propagation on Reconfigurable Porous Plane

Chu,

Tong,

Wong

et al. 2023

Preprint

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This paper introduces a novel reconfigurable technique for partitioning surface waves by utilizing a T-shaped structure and pathways established through the introduction of fluid metal or metal pins into evenly spaced cylindrical cavities within a porous surface wave platform. Notably, the co-printing of metal and dielectric materials via 3D printing is employed, resulting in an expedited fabrication process. Extensive 3D electromagnetic simulations and experimental investigations validate the proposed approach's efficacy in achieving surface wave division while minimizing interference. The study encompasses an exploration of diverse power distribution ratios achievable within the distributed surface waves. Critical physical parameters of the T-junction are comprehensively examined, including partition depth, junction geometry, output port symmetry, and asymmetry. Additionally, the research delves into the frequency-dependent behaviours of asymmetric T-junctions and pathways. These findings establish the groundwork for adaptable architectures, facilitating concurrent communication among multiple devices within a unified surface wave communication network. This innovation holds potential to enhance various applications through improved communication capabilities.

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Section: Measurement Setupmentioning

confidence: 93%

Investigation in Surface Wave Propagation on Reconfigurable Porous Plane

Chu,

Tong,

Wong

et al. 2023

Preprint

Self Cite

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“…Cylindrical cavities of 0.5 mm radius and centre-to-centre spaced 2 mm are evenly distributed on the dielectric to create a porous surface. Metallic pin are inserted in the cavities for creating a guided pathways [12,13] to diverting the surface wave to the desirable positions for re-radiation on the surface. To realize ON/OFF states of the meta-cell involves the deployment of a high-frequency PIN-diode connecting between the pins and ground plane.…”

Section: From Surface Wave Back To Space Wavementioning

confidence: 99%

“…Fig. 2 shows the synthesized simulation findings, comparing the OFF and ON states of a reconfigurable surfacewave waveguide operational at 25 GHz [12,13]. The figure distinctly showcases the propensity of the surface wave to diffuse along the dielectric interface while in the OFF state.…”

Section: From Surface Wave Back To Space Wavementioning

confidence: 99%

Surface Wave Technique for RIS Applications: Invited Paper

Jafargholi,

Tong,

Wong

2023

2023 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)

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Increasing demands on high-performance platforms in the sixth generation (6G) of mobile communications raise research focus on new transducers. Recently, reconfigurable Intelligent Surfaces (RIS) have been proposed to address both the coverage and power issues. However, it may not be sufficient to solely rely on the manipulated reflections on RIS in the cases of high free-space path loss and blind spots in urban areas. To bridge such a gap, we propose a novel surface wave technique to enable a new communication surface to tackle the coverage and power concerns.

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Partitioning surface wave propagation on reconfigurable porous plane

Chu,

Tong,

Wong

et al. 2024

Sci Rep

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This paper introduces a novel reconfigurable technique for partitioning the propagation of surface waves by utilizing a T-shaped structure and pathways established through the introduction of fluid metal or metal pins into evenly spaced cylindrical cavities within a porous surface wave platform. Notably, the co-printing of metal and dielectric materials via 3D printing is employed, resulting in an expedited fabrication process. Extensive 3D electromagnetic simulations and experimental investigations validate the proposed approach’s efficacy in achieving surface wave division while minimizing interference. The study encompasses an exploration of diverse power distribution ratios achievable within the distributed surface waves. Critical physical parameters of the T-junction are comprehensively examined, including partition depth, junction geometry, output port symmetry, and asymmetry. Additionally, the research delves into the frequency-dependent behaviours of asymmetric T-junctions and pathways. These findings establish the groundwork for adaptable architectures, facilitating concurrent communication among multiple devices within a unified surface wave communication network. This innovation holds potential to enhance various applications through improved communication capabilities.

show abstract

On Surface Wave Propagation Characteristics of Porosity-Based Reconfigurable Surfaces

Cited by 5 publications

References 9 publications

Investigation in Surface Wave Propagation on Reconfigurable Porous Plane

Investigation in Surface Wave Propagation on Reconfigurable Porous Plane

Surface Wave Technique for RIS Applications: Invited Paper

Partitioning surface wave propagation on reconfigurable porous plane

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