Design and characterisation of half-Maxwell fish-eye lens antenna in 76–81 GHz band

Fuchs, Benjamin; Lafond, Olivier; Rondineau, S.; Himdi, Mohamed; Coq, Laurent Le

doi:10.1049/el:20063493

Cited by 8 publications

(40 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The commercial software CST Microwave Studio ® , based on finite integrals, has been used to compute the directivity and far field radiation patterns of the LL antennas. This commercial software has already been used to compute similar structures [9].…”

Section: B Validation Of the Optimization Methods 1) Lens Antenna Geomentioning

confidence: 99%

“…which only appears in the boundaries of the integrals. One gets a system of equations (9) The minimum for fixed , i.e., fixed 's, is attained when the 's are such that all the 's have the same value i.e., . It follows immediately that the optimal permittivities are: where , i.e., they decrease regularly, and the corresponding optimal radii are such that .…”

Section: ) Description Of the Optimization Algorithmmentioning

confidence: 99%

See 1 more Smart Citation

Design Optimization of Multishell Luneburg Lenses

Fuchs

Coq

Lafond

et al. 2007

IEEE Trans. Antennas Propagat.

109

View full text Add to dashboard Cite

Guidelines are provided for designing multishell Luneburg lenses (LL) whatever the primary source is. Three different optimization problems that minimize three different norms of the discrepancy between the ideal relative permittivity and the reconstructed one with respect to the thickness and permittivity of each shell are detailed. The performances of the three so-optimized LL are compared by simulations with those of previously proposed approaches. The highest directivity is obtained for the minmax norm. An investigation of the influence of the number of shells on the lens antenna performances, directivity, sidelobe levels and aperture efficiencies for various lens diameters, is also proposed in order to better know how to choose these parameters. Finally, measurements done with a multishell Luneburg lens fed by a waveguide are compared with simulations to show, through excellent agreements between theory and measurements, the validity of this study.

show abstract

Section: B Validation Of the Optimization Methods 1) Lens Antenna Geomentioning

confidence: 99%

Section: ) Description Of the Optimization Algorithmmentioning

confidence: 99%

Design Optimization of Multishell Luneburg Lenses

Fuchs

Coq

Lafond

et al. 2007

IEEE Trans. Antennas Propagat.

109

View full text Add to dashboard Cite

show abstract

“…But such devices are often large compared to the wavelength. A new kind of inhomogeneous lens is presented in [6], namely the Half Maxwell Fish Eye (HMFE). This lens is a hemispherical dielectric gradient index lens.…”

Section: Inhomogeneous Lens Based On a Half Maxwell Fish-eye Lensmentioning

confidence: 99%

Far field millimetric band antenna test facility : Positioning procedure using phase measurements

Coq

Godi

Fuchs

et al. 2006

2006 First European Conference on Antennas and Propagation

Self Cite

View full text Add to dashboard Cite

“…The engineering of advanced microwave lens technologies relies heavily on gradient refractive index (GRIN) media [1][2][3][4][5][6][7][8][9], which allow for precise control of the refractive index [9][10][11][12][13][14][15][16][17][18][19], and the manipulation of electromagnetic waves across various frequencies. This sophisticated control allows for the fabrication of intricate systems and devices, such as invisibility cloaks [1], Fresnel lenses [2,3], metamaterial transmit arrays [2], Maxwell Fish-Eye lenses [5][6][7], GRIN lenses [7][8][9], Luneburg lenses [11][12][13][14][15][16][17][18][19], and beam-shaping lens antennas [9]. Luneburg and Half-Maxwell Fish-Eye lenses have a crucial role in the advancement of modern optical and electromagnetic technologies, as demonstrated by the strategic application of GRIN lenses in these areas [6].…”

Section: Introductionmentioning

confidence: 99%

Unveiling New IoT Antenna Developments: Planar Multibeam Metasurface Half-Maxwell Fish-Eye Lens with Wavelength Etching

Pourahmadazar,

Virdee,

Denidni

2024

Electronics

View full text Add to dashboard Cite

This study introduces a groundbreaking antenna system, the directive Metasurface Half-Maxwell Fish-Eye (MHMF) lens antenna, tailored specifically for Internet-of-Things (IoT) networks. Designed to operate at 60 GHz, this antenna ingeniously integrates a dipole antenna within a parallel-plate waveguide to illuminate a Half-Maxwell Fish-Eye (HMFE) lens. The HMFE lens serves as a focal point, enabling a crucial high gain for IoT operations. The integration of metasurface structures facilitates the attainment of the gradient refractive index essential for the lens surface. By employing commercial Ansys HFSS software, extensive numerical simulations were conducted to meticulously refine the design, focusing particularly on optimizing the dimensions of unit cells, notably the modified H-shaped cells within the parallel waveguides housing the beam launchers. A functional prototype of the antenna was constructed using a standard PCB manufacturing process. Rigorous testing in an anechoic chamber confirmed the functionality of these manufactured devices, with the experimental results closely aligning with the simulated findings. “Far-field measurements have further confirmed the effectiveness of the antenna, establishing it as a high-gain antenna solution suitable for IoT applications. Specifically, it operates effectively within the 60 GHz range of the electromagnetic spectrum, which is crucial for ensuring reliable communication in IoT devices.” The directive HMFE lens antenna represents a significant advancement in enhancing IoT connectivity and capabilities. Leveraging innovative design concepts and metasurface technology, it heralds a new era of adaptable and efficient IoT systems.

show abstract

Design and characterisation of half-Maxwell fish-eye lens antenna in 76–81 GHz band

Cited by 8 publications

References 1 publication

Design Optimization of Multishell Luneburg Lenses

Design Optimization of Multishell Luneburg Lenses

Far field millimetric band antenna test facility : Positioning procedure using phase measurements

Unveiling New IoT Antenna Developments: Planar Multibeam Metasurface Half-Maxwell Fish-Eye Lens with Wavelength Etching

Contact Info

Product

Resources

About