Caustics and Beam Steering Calculations of Negative Refractive Index Lens Antenna by the Ray Tracing Method

Hung, Phan Van; Dinh, Nguyen Quoc; Dung, Dang Tien; Yamada, Yoshıhıde

doi:10.1109/atc50776.2020.9255482

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…To apply multibeam lens antennas for 5G base station, many lens structures should be studied. Therefore, focal region ray tracing for arbitral lens shape is required.Determination of feed position is important to achieve good multibeam performance [8,13]. Focal region ray tracing provides useful data for feed position selection.…”

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confidence: 99%

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Focal Region Ray Tracing of Conventional and Shaped Lens Antenna

Muhsin,

Kamardin,

Yamada

2023

IJIE

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Multibeam lens antennas are useful for 5G mobile communication systems. For multibeam design, feed position determination of specified lens becomes an important subject. The feed position data can be obtained from focal region ray tracing. In this paper, asimple and convenient ray tracing method by using the MATLAB function of “polyxpoly” is proposed. To evaluate the program, focal region ray tracing on conventional hyperbolic planar, spherical convex, and Abbe’s sine conditionlens arepresented in this paper. For focal region ray tracing, parallel incident ray is considered. The incident ray’s angle is changed from 0 degree to 30 degrees with an interval of 10 degrees. On hyperbolic planar and spherical convex lenses, ray concentration at the focal regionis distorted at incident angle of 10 degrees and above. On Abbe’s sine condition lens, good concentration is maintained until 20 degrees. Concentration points agree well with the theoretical value. Therefore, the correctness of the program is ensured.

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confidence: 99%

“…Determination of feed position is important to achieve good multibeam performance [8,13]. Focal region ray tracing provides useful data for feed position selection.…”

mentioning

confidence: 99%

Focal Region Ray Tracing of Conventional and Shaped Lens Antenna

Muhsin,

Kamardin,

Yamada

2023

IJIE

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Beam-steering of dielectric flat lens nanoantenna with elliptical patch based on antenna displacement for optical wireless applications

Helmy,

Ibrahim,

Saleh

2023

Sci Rep

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In this paper, the switched-beam nanoantenna (NA) concept is introduced with a theoretical design of an inhomogeneous dielectric flat lens modelled with different materials to steer and enhance the radiation in a particular direction based on shifting the illuminator element. Firstly, the design of hybrid plasmonic NA is introduced and analyzed considering different silicon patch shapes such as rectangular, circular, hexagonal, and elliptical shapes. The elliptical patch NA achieves a gain of up to 10.7 dBi and a return loss of − 14.41 dB. Then the design of a gradient-index dielectric flat lens with the NA is introduced to improve the antenna performance by increasing the directivity and consequently decreasing the beam-width. Furthermore, the beam-steering capabilities by displacement of the NA according to different feeding points along the X and Y-direction. By using the gradient-index dielectric flat lens, the gain is increased to 18.4 dBi with an improvement in the return loss reach to − 19.15 dB compared with traditional NA. In addition, the beam-steering capabilities were achieved with a range ± 60° × ± 55° with acceptable average antenna gain, side-lobe levels, and half power beam-width of 16.5 dBi, − 12.3 dB and 13.6° respectively.

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