Compact and Robust Fabry-Perot Cavity Antenna with PEC Wall

Lee, Jae-Gon

doi:10.26866/jees.2021.3.r.25

Cited by 16 publications

(5 citation statements)

References 15 publications

(15 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Meanwhile, the two-dimensional (2D) counterparts of metamaterials, which are well known as metasurfaces, have been intensively investigated for their promising advantages of compactness, low cost, high-level integration, and ease of fabrication. Recently, metasurfaces have found their stands in diverse innovative applications, including reconfigurable radiating performances [ 1 , 2 , 3 , 4 ], polarisation converters [ 5 ], electromagnetic cloaks [ 6 , 7 , 8 ], vortex-beam generation/manipulation [ 9 , 10 , 11 ], holography [ 12 , 13 , 14 , 15 , 16 ], and beam deflectors [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

1-Bit Transmission-Type Digital Programmable Coding Metasurface with Multi-Functional Beam-Shaping Capability for Ka-Band Applications

et al. 2023

View full text Add to dashboard Cite

Digital programmable coding metasurfaces (DPCMs) have recently attracted enormous attention and have been broadly applied, owing to their ability to manipulate electromagnetic (EM) wave behaviours and programmable multi-functionality. Recent DPCM works are divided into reflection and transmission types (R-DPCM and T-DPCM, respectively); however, there are only a few reported T-DPCM works in the millimetre-wave spectrum, owing to the difficulty of realising the large-phase controllable range while maintaining low transmission losses with electronic control components. Consequently, most millimetre-wave T-DPCMs are demonstrated only with limited functions in a single design. Additionally, all these designs use high-cost substrate materials that constrain practical applicability, owing to cost-ineffectiveness. Herein, we propose a 1-bit T-DPCM that simultaneously performs three dynamic beam-shaping functions with a single structure for millimetre-wave applications. The proposed structure is completely constructed using low-cost FR-4 materials, and operation of each meta-cell is manipulated using PIN-diodes, thus driving the achievement of multiple effective dynamic functionalities including dual-beam scanning, multi-beam shaping, and orbital-angular-momentum-mode generation. It should be noted that there are no reported millimetre-wave T-DPCMs demonstrating multi-function design, thus showing a gap in the recent literature of millimetre-wave T-DPCMs. Moreover, cost-effectiveness can be significantly enhanced, owing to the construction of the proposed T-DPCM using only low-cost material.

show abstract

Section: Introductionmentioning

confidence: 99%

1-Bit Transmission-Type Digital Programmable Coding Metasurface with Multi-Functional Beam-Shaping Capability for Ka-Band Applications

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Conventionally, linear polarized reflectarray [6,7], transmitarray [8,9], and resonance cavity antennas [10][11][12][13][14] are designed by utilizing configurable superstrates and nonconfigurable substrates. However, there are relatively few antennas of these types [15][16][17] that offer circular polarization, which is important for defense and space applications [18].…”

Section: Introductionmentioning

confidence: 99%

Circularly Polarized High-Gain Fabry-Perot Cavity Antenna with High Sidelobe Suppression

2023

View full text Add to dashboard Cite

The proposed design approach improves the circularly polarized Fabry-Perot cavity antenna (CP-FPCA) by increasing gain and sidelobe suppression (SLS) while reducing the axial ratio (AR) and cross-polarization levels. Conventional CP-FPC antennas have a high AR due to the lack of independent control over circular polarization conditions. The solution proposes a double-layered circularly polarized partially reflecting surface (CP-PRS) that independently controls the circular polarization conditions at the design frequency f0 (10 GHz) for equal magnitudes and at a ±90° phase difference between orthogonal components of the transmitted waves. The PRS and artificial magnetic conductor (AMC) unit cells are employed to satisfy Trentini’s beamforming condition, leading to increased gain and SLS and lowered AR and cross-polarization levels. Consequently, the proposed CP-FPCA provides a 15.4 dBi high gain with 25.3% aperture efficiency and more than 23.5 dB high SLS in each plane. Moreover, it achieves an AR lowered by 0.12 dB and a cross-polarization level below −42 dB. A strong correlation between the simulations and experiments proves the practicality of our proposal.

show abstract

“…Multiple EM functionalities can be achieved with reconfigurable and programmable (active) metasurfaces 20 – 33 . Active component interactions with metamaterials introduce transmission phase inconsistencies because of partial reflection off the metasurface 34 – 36 , enabling reconfigurable beam steering 37 – 39 . Wen et al 40 , introduced additional degrees of freedom for advanced EM wave manipulation in space-time and frequency domains by spatially integrating reconfigurable microelectromechanical systems (MEMS) and photoresponsive material into metamaterials.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic metasurface for programming electromagnetic beam scanning on the Azimuth and elevation planes

Naqvi

Lim

2022

Microsyst Nanoeng

View full text Add to dashboard Cite

The development of multifunctional and reconfigurable metasurfaces capable of manipulating electromagnetic waves has created new opportunities for various exciting applications. Extensive efforts have been applied to exploiting active metasurfaces with properties that can be controlled by externally controlling active components. However, previous approaches have poor switch isolation, power handling limitations due to nonlinear effects, and complex biasing networks. Therefore, dynamically tunable metasurfaces have become a burgeoning field in many research areas. This paper reports a hydrodynamic metasurface (HMS) that can be programmed to realize electromagnetic beam scanning on the azimuth and elevation planes. The proposed HMS platform incorporates four micropumps, each controlling four metasurface elements via microfluidic channels, built into the HMS base. The proposed platform regulates microfluidic flow through micropumps, causing irregularities in incident wave transmission phase. An HMS was built as a proof of concept, and far-field scanning experiments were performed. Numerical and experimental results verify the feasibility of electromagnetic beam scanning using a hydrodynamic metasurface. This work advances metasurface research, with very high potential for wide-ranging application and a promising route for replacing bulky cascading active components.

show abstract

Compact and Robust Fabry-Perot Cavity Antenna with PEC Wall

Cited by 16 publications

References 15 publications

1-Bit Transmission-Type Digital Programmable Coding Metasurface with Multi-Functional Beam-Shaping Capability for Ka-Band Applications

1-Bit Transmission-Type Digital Programmable Coding Metasurface with Multi-Functional Beam-Shaping Capability for Ka-Band Applications

Circularly Polarized High-Gain Fabry-Perot Cavity Antenna with High Sidelobe Suppression

Hydrodynamic metasurface for programming electromagnetic beam scanning on the Azimuth and elevation planes

Contact Info

Product

Resources

About