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Author(s): Silva, J.
García-Vigueras, M.
Mosig, J.
Esquius-Morote, M.
Costa, J. R.
Fernandes, C. A.
Editor: Luis M. Correia
Date: 2015
Title: Lens-based Ka-band antenna system using planar feed
ISBN: 978-889070185-6
Keywords: Satellite communications
Mechanical beam-steering
Dielectric lens
Planar feed
Abstract: This paper presents a simple, low-cost and compact mobile ground terminal antenna for Ka-band satellite communications that operates in the downlink band (19.7-20.2 GHz). The antenna is composed of a shaped dielectric lens which tilts in front of a planar feed to direct the beam. The planar feed is a circularly polarized patch antenna placed inside a cavity. The lens allows a mechanical beam steering from 0° to 57° in relation to zenith with a scan loss of 4.5 dB. In order to show the potential of a planar antenna as a feeder for this application, the proposed system is compared with a previous solution composed of the same dielectric lens and a horn antenna as feeder.
Peerreviewed: yes
Access type: Open Access
Appears in Collections:IT-CRI - Comunicações a conferências internacionais

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