J
Jose R. Bergmann
Researcher at Pontifical Catholic University of Rio de Janeiro
Publications - 99
Citations - 571
Jose R. Bergmann is an academic researcher from Pontifical Catholic University of Rio de Janeiro. The author has contributed to research in topics: Reflector (antenna) & Omnidirectional antenna. The author has an hindex of 12, co-authored 95 publications receiving 513 citations. Previous affiliations of Jose R. Bergmann include The Catholic University of America & Queen Mary University of London.
Papers
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A comparison between techniques for global surface interpolation in shaped reflector analysis
TL;DR: In this paper, three techniques capable of performing global interpolations of numerically defined (3D) surfaces, namely, the quintic pseudosplines, polynomial Fourier series, and Jacobi-polynomial-sinusoidal expansions, are explored.
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Axis-Displaced Dual-Reflector Antennas for Omnidirectional Coverage With Arbitrary Main-Beam Direction in the Elevation Plane
TL;DR: In this article, the synthesis of classical dual-reflector antennas suited to provide omnidirectional coverages with arbitrary main-beam direction in the elevation plane is discussed, and closed-form design equations are presented for the geometric-optics synthesis of all possible configurations.
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Synthesis of shaped-beam reflector antenna patterns
TL;DR: In this paper, the authors describe the synthesis of shaped-beam dual-reflector antenna patterns using two methods: Geometric Optics synthesis method used to define the reflector coordinates and an optimisation procedure was employed to shape the reflectors directly, so as to generate, through Physical Optics, the desired far field.
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Classical axis-displaced dual-reflector antennas for omnidirectional coverage
TL;DR: In this paper, the synthesis and performance of classical dual-reflector antennas suited for an omnidirectional coverage was discussed, where the reflector arrangements were axially symmetric with surfaces of revolution generated by axis-displaced conic sections.
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Shaping Axis-Symmetric Dual-Reflector Antennas by Combining Conic Sections
TL;DR: In this article, a simple procedure for the shaping of axis-symmetric dual-reflector antennas is described, based on the consecutive concatenation of local conic sections suited to provide, under geometrical optics (GO) principles, an aperture field with uniform phase, together with a prescribed amplitude distribution.