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On arranging dual-polarised antennas in 3D wave field synthesis

: Kotterman, Wilhelmus A.T.; Schirmer, Christopher; Landmann, Markus; Galdo, Giovanni del


European Association on Antennas and Propagation -EurAAP-; Institute of Electrical and Electronics Engineers -IEEE-:
8th European Conference on Antennas and Propagation, EuCAP 2014 : 6-11 April 2014, The Hague
Piscataway, NJ: IEEE, 2014
ISBN: 978-88-907018-4-9
European Conference on Antennas and Propagation (EuCAP) <8, 2014, The Hague>
Fraunhofer IIS ()
UHF (330-2900 MHz); Test und Validierung; Satellitenkommunikation; Messtechnik; MATLAB; L-Band (1000-2000 MHz); HF-Teilsysteme; Funkkanäle; Drahtloses Netzwerk; drahtloses Kommunikationssystem; digitales Rundfunksystem; Allgemeines

For three-dimensional electromagnetic wave field synthesis, the orientation of dual-polarised antenna elements has influence on the size or volume of the usable “quiet zone” or ”sweet spot”. The customary choice of polarisation directions along phi and theta allows for the full angular range over which wave fields can be synthesised. But, we show that this choice effectively reduces the number of available active radiators in case a single polarised wave is to be synthesised, with direction of incidence near the phi-axis. One option to maintain synthesis quality is driving both types of polarised elements, meaning also adding channel emulators that are an appreciable cost factor. However, not all applications need fully 3-D incident fields and some simple compromises for specific applications are proposed.