Full Text Journal Articles by
Author Miguel Ruphuy

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3D printed millimeter-wave beam-steering reflector using dielectric fluids.

Miguel Ruphuy, Carlos E Saavedra,

A three-dimensional printed beam-steering reflector surface with dielectric fluids as the tuning agent is presented. The reflector is made using ECO-ABS with six rows of 19 parallel channels of square cross-sections. The permittivity of the ECO-ABS was measured at 2.55 with a loss tangent of 0.053. A conductor is placed ... Read more >>

J Opt Soc Am A Opt Image Sci Vis (Journal of the Optical Society of America. A, Optics, image science, and vision)
[2021, 38(2):237-244]

Cited: 0 times

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Spherical aberration in electrically thin flat lenses.

Miguel Ruphuy, Omar M Ramahi,

We analyze the spherical aberration of a new generation of lenses made of flat electrically thin inhomogeneous media. For such lenses, spherical aberration is analyzed quantitatively and qualitatively, and comparison is made to the classical gradient index rod. Both flat thin and thick lenses are made of gradient index materials, ... Read more >>

J Opt Soc Am A Opt Image Sci Vis (Journal of the Optical Society of America. A, Optics, image science, and vision)
[2016, 33(8):1531-1536]

Cited: 0 times

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Refraction in electrically thin inhomogeneous media.

Miguel Ruphuy, Omar M Ramahi,

This work presents a new formulation for refraction from flat electrically thin lenses and reflectors comprised of inhomogeneous material. Inhomogeneous electrically thin flat lenses and reflectors cannot make use of the Snell law since this classical formulation works solely at interfaces of planar homogeneous media. The refraction of a perpendicularly ... Read more >>

J Opt Soc Am A Opt Image Sci Vis (Journal of the Optical Society of America. A, Optics, image science, and vision)
[2016, 33(4):538-543]

Cited: 1 time

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Electrically thin flat lenses and reflectors.

Miguel Ruphuy, Omar Siddiqui, Omar M Ramahi,

We introduce electrically thin dielectric lenses and reflectors that focus a plane wave based on the principles of phase compensation and constructive wave interference. Phase compensation is achieved by arranging thin rectangular slabs having different dielectric permittivity according to a permittivity profile obtained through analytic design equations. All incident rays ... Read more >>

J Opt Soc Am A Opt Image Sci Vis (Journal of the Optical Society of America. A, Optics, image science, and vision)
[2015, 32(9):1700-1706]

Cited: 3 times

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Analytical models for electrically thin flat lenses and reflectors.

Miguel Ruphuy, Omar M Ramahi,

This work presents analytical models for two-dimensional (2D) and three-dimensional (3D) electrically thin lenses and reflectors. The 2D formulation is based on infinite current line sources, whereas the 3D formulation is based on electrically small dipoles. These models emulate the energy convergence of an electrically thin flat lens and reflector ... Read more >>

J Opt Soc Am A Opt Image Sci Vis (Journal of the Optical Society of America. A, Optics, image science, and vision)
[2015, 32(4):507-513]

Cited: 3 times

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