Lens-based Ka-band antenna system using planar feed

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...

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Bibliographic Details
Main Author: Silva, J. (author)
Other Authors: García-Vigueras, M. (author), Mosig, J. (author), Esquius-Morote, M. (author), Costa, J. R. (author), Fernandes, C. A. (author)
Format: conferenceObject
Language:eng
Published: 2022
Subjects:
Satellite communications
Ka-band
Mechanical beam-steering
Dielectric lens
Planar feed
Online Access:http://hdl.handle.net/10071/25008
Country:Portugal
Oai:oai:repositorio.iscte-iul.pt:10071/25008
Description
Summary: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.

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