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Title: Phase-only shaped beam transmit-array
Authors: Cruz, C. C.
Fernandes, C. A.
Matos, S. A.
Costa, J. R.
Keywords: Transmit-arrays
Planar lens antennas
Radiation pattern shaping
Geometrical Optics
Secant squared power pattern
Issue Date: 2018
Publisher: IEEE
Abstract: A new analytical formulation is presented in this paper to obtain the phase correction function for planar transmitarrays, to produce a prescribed amplitude template. This phaseonly design enables using high transmission unit cells to favor maximum gain. Here, a transmit-array transforms the known power radiation pattern of the primary source into a desired output power pattern. As a proof of concept, two different output power radiation patterns are presented, namely, a sec2 with a roll-off at 45º and a flat-top with 20º of roll-off, at the 30 GHz Ka-band. The transmit-array aperture is 180 mm × 180 mm, with 60 mm focal length. It is illuminated by a 10.8 dBi feed radiation pattern, with circular polarization
Peer reviewed: yes
Appears in Collections:IT-CRI - Comunicações a conferências internacionais

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