7. Conclusions

RLSA antennas have been developed since the 1980s until nowadays. They were initially developed for satellite receiver antennas. Due to their advantages, such as high gains and flat shapes, these antennas have been also developed for small device applications at smaller frequencies, such as Wi-Fi, 5th G, 4th G, etc. However developing RLSA antennas for small device applications had been facing the problem of high signal reflections, due to the limited number of slots. Several techniques had been proposed to overcome the problem. Among the techniques, the extreme beamsquint technique is the most effective technique in reducing signal reflections. By resolving the problem of signal reflections, the research areas for RLSA antennas become wide open, especially for multibeam RLSA antennas, multiband RLSA antennas and size minimization by cutting RLSA antennas.

Author details

Teddy Purnamirza

199

Universitas Islam Negeri Sultan Syarif Kasim, Pekanbaru Riau, Indonesia

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium,

\*Address all correspondence to: tptambusai@uin-suska.ac.id

provided the original work is properly cited.

Radial Line Slot Array (RLSA) Antennas DOI: http://dx.doi.org/10.5772/intechopen.87164 Radial Line Slot Array (RLSA) Antennas DOI: http://dx.doi.org/10.5772/intechopen.87164
