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Title: Beam-steering ka-band phase rotation cells-based transmit-array for circular-polarization
Authors: Naseri, P.
Matos, S. A.
Costa, J. R.
Fernandes, C. A.
Keywords: Transmit-array
Circular Polarization
Wideband antenna
Satellite communication
Issue Date: 2018
Publisher: Institution of Engineering and Technology
Abstract: Planar transmit-arrays (TAs) have been an attractive solution as gain-enhancers for various applications, e.g. satellite communications. For the first time, a TA composed of sequentially rotated cells is employed as beam-steering circular polarization Ka-band satellite ground terminal. Moreover, it is shown that the intrinsic filtering effect of phase rotation (PR) cells for this kind of TA enables improvement in the axial ratio bandwidth. The performance of the TA is evaluated through simulation. The TA presents only 2.7dB loss over zenith scan between 15° and 50° while its structure rotation provides 360° azimuth scan. The TA offers 2GHz (28.730.7GHz) combined 3dB axial ratio and 3dB gain bandwidth.
Peer reviewed: yes
DOI: 10.1049/cp.2018.1136
ISBN: 978-1-78561-816-1
Appears in Collections:IT-CRI - Comunicações a conferências internacionais

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