Beam Shaping by Meta-surfaces in Millimeter-Wave Active Standoff Imaging, M.Sc. Thesis Sharif University of Technology ; Ahmadi Boroujeni, Mehdi (Supervisor)
Abstract
Beam shaping, the transformation of radiated Gaussian beam from the millimeter wave source (conical horn antenna) into a flat-top beam at a certain distance, in the Millimeter wave active stand-off imaging system can be done in different ways, among them, beam shaping with a concave-convex lens (double-sided lens) in transmission mode (previous research done) can be mentioned. This lens consists of a convex-plane and a plane-concave lenses. when the electromagnetic wave passes through the convex-plane part, the wave front of the incident electric field changes from spherical to plane so that the divergent incident rays become parallel, and then the phase profile of the electric field changes...
Cataloging briefBeam Shaping by Meta-surfaces in Millimeter-Wave Active Standoff Imaging, M.Sc. Thesis Sharif University of Technology ; Ahmadi Boroujeni, Mehdi (Supervisor)
Abstract
Beam shaping, the transformation of radiated Gaussian beam from the millimeter wave source (conical horn antenna) into a flat-top beam at a certain distance, in the Millimeter wave active stand-off imaging system can be done in different ways, among them, beam shaping with a concave-convex lens (double-sided lens) in transmission mode (previous research done) can be mentioned. This lens consists of a convex-plane and a plane-concave lenses. when the electromagnetic wave passes through the convex-plane part, the wave front of the incident electric field changes from spherical to plane so that the divergent incident rays become parallel, and then the phase profile of the electric field changes...
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