Quadrilateral broadband lens antenna to radiate simultaneous or independent four beams

Ramezani, Dana; Taskhiri, Mohammad Mahdi; Hadian, Ebrahim

doi:10.1049/ell2.12638

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…Recently, some fabrication methods have led to special attention to the design and use of inhomogeneous lens structures. Some of these methods are perforated dielectrics [22,[35][36][37][38], printed metasurface [39][40][41][42][43][44], 3D printed structure [45][46][47], multi printed layer [48], dielectric layered shell deposition [49], and other methods.…”

Section: Introductionmentioning

confidence: 99%

The low‐cost inhomogeneous multi‐section flat lens antenna with minimum F over D design in Ku‐band

Taskhiri

2023

IET Microwaves Antenna & Prop

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This article uses the ray inserting method to design a low‐cost inhomogeneous lens in the Ku‐band. The focal length to the diametre ratio of the designed lens is 0.45, which is lower than most designed lenses in this area. Also, no approximation is considered to yield the refractive index profile. The refractive index changes from the centre to the sides have been made in two sections to limit the maximum calculated refractive index of the structure to the Plexiglass refractive index. The designed lens proposed a good match to the source and surroundings. The theoretical design is validated by the finite difference time domain scheme and full‐wave simulation. The lens structure is realised and fabricated on a multilayer Plexiglass sheet. The results of simulations and experiments indicate good performances of the designed lens in the wide frequency bandwidth.

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Section: Introductionmentioning

confidence: 99%

The low‐cost inhomogeneous multi‐section flat lens antenna with minimum F over D design in Ku‐band

Taskhiri

2023

IET Microwaves Antenna & Prop

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“…The effective-medium theory can be used by embedding air holes in cubic or fan-shaped dielectric unit cells to realize inhomogeneous permittivity distribution. 3-D Printed techniques (additive manufacturing) 34 , 45 , 46 , printed metasurfaces 47 , 48 , laser-cutting 49 , PCB milling, and dielectric substrate drilling 50 , 51 are methods to fabricate this medium.…”

Section: Introductionmentioning

confidence: 99%

Broadband inhomogeneous lens with conical radiation pattern

Taskhiri

Fakhte

2023

Sci Rep

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This manuscript presents a lens antenna with simultaneous broadside and conical beams. The lens is designed for the Ku band using the ray inserting method. The proposed conical radiation pattern is broadband due to good matching with the source and surroundings. The simulation is conducted using the CST microwave studio solver. Instead of complex antenna shapes used in other works, a simple circular patch ring and RF connector are used as the lens feed to generate broadside and omnidirectional conical patterns, respectively. To validate the performance of the designed lens and its two-port feed antenna, the lens structure is realized and fabricated using the 3D printing method. Polyethylene terephthalate glycol (PETG) plastic material is utilized for constructing the lens in this work. The electromagnetic characteristics of PETG in the Ku band are accurately measured. The results of simulations and experiments demonstrate the good performance of the designed lens over a wide frequency bandwidth. The advantage of this designed structure over other works is its high gain and broad bandwidth.

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RETRACTED ARTICLE: Analytical design of wideband dielectric polygonal directional beam antennas

Nasrollahi,

Keshtkar,

Taskhiri

2023

Opt Quant Electron

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Quadrilateral broadband lens antenna to radiate simultaneous or independent four beams

Cited by 4 publications

References 7 publications

The low‐cost inhomogeneous multi‐section flat lens antenna with minimum F over D design in Ku‐band

The low‐cost inhomogeneous multi‐section flat lens antenna with minimum F over D design in Ku‐band

Broadband inhomogeneous lens with conical radiation pattern

RETRACTED ARTICLE: Analytical design of wideband dielectric polygonal directional beam antennas

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