Matching Theory of Cross-Polarization Suppression Components for Large-Scale Rectangular Waveguide Slot Array Antennas

DOI

10.2991/icmmcce-17.2017.250How to use a DOI?

Keywords

slot array antenna; cross-polarization suppression; parallel metallic plates

Abstract

In order to obtain good circular polarization, parallel metallic plates are used for large-scale rectangular waveguide slot array antennas to achieve pure linear polarization at first. It is found that these plates not only suppress cross-polarization, but also influence the original amplitude distribution of arrays for co-polarization. Though it is easy to obtain the proper plates length to achieve satisfying cross-polarization suppression. Plates with a specific length drastically perturb the array distribution, which leads to severe degradation of radiation performance. A matching theory for plates design is proposed and verified. It provides proper parameters for parallel metallic plates, and criteria for judging the design results. A practical array antenna is fabricated. Both the simulation and measurement results validate this theory. The theory gives guidance of designing similar external components for cross-polarization suppression or other functions, which is useful for slot arrays and other array antennas.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Boyuan Ma
AU  - J. Pan
PY  - 2017/09
DA  - 2017/09
TI  - Matching Theory of Cross-Polarization Suppression Components for Large-Scale Rectangular Waveguide Slot Array Antennas
BT  - Proceedings of the 2017 5th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering (ICMMCCE 2017)
PB  - Atlantis Press
SP  - 1424
EP  - 1429
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmcce-17.2017.250
DO  - 10.2991/icmmcce-17.2017.250
ID  - Ma2017/09
ER  -