ANTENNA ARRAY WITH CIRCULAR POLARIZATION AND RGW TECHNOLOGY FOR SATELLITE APPLICATIONS
Keywords:Gap Waveguide, arreglo de antenas, banda Ka, polarización circular.
The Gap Waveguide (GW) technology is an alternative to conventional transmission lines for use in the design of antennas in the millimeter-wave band (3 - 300 GHz). Compared to other lines used in microwave systems, higher efficiency values are obtained, with the consequent increase in antenna gain, because in most cases the GW does not use substrate. Besides, due to its physical characteristics, the GW technology has greater resistance to solar radiation. These two advantages are very useful in satellite applications because they operate in extreme conditions of solar radiation and with batteries that limit the life of the satellite. The present work is aimed at the design of a 2x2 element slot antenna array for satellite applications in the Ka-band with circular polarization, using the Ridge Gap Waveguide (RGW) variant. The simple element of the array consists of an L-terminated structure and a rotated slot in the top metal plate for circular polarization. A maximum gain of 12.5 dB is obtained, a circular polarization bandwidth of approximately 18.4%, and total efficiency of 99% for the design frequency (35 GHz), falling at the ends of the band up to 85%.
How to Cite
The authors who publish in this journal agree to the following terms:
- The authors retain the copyright and guarantee to the journal the right to be the first publication of the work are distributed under a license of use and distribution "Creative Commons Attribution-NonCommercial-NoDerivativeWorks 3.0 Unported" (CC BY-NC-ND 3.0) You can consult from here the informative version and the legal text of the license that allows others to share the work with an acknowledgement of the authorship of the work and the initial publication in this journal.
- Authors may separately enter into additional agreements for non-exclusive distribution of the version of the work published in the journal (for example, placing it in an institutional repository or publishing it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are allowed and encouraged to disseminate their work electronically (e.g., in institutional repositories or on their own website) before and during the submission process, as this can lead to productive exchanges as well as earlier and greater citation of published work (see The Effect of Open Access).