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3D wave-field synthesis for testing of radio devices

: Schirmer, Christopher; Landmann, Markus; Kotterman, Wilhelmus A.T.; Hein, Matthias; Thomä, Reiner S.; Galdo, Giovanni del; Heuberger, Albert


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>
Conference Paper
Fraunhofer IIS ()
WLAN; UWB (Kommunikation); UMTS; Richtungsschätzung (DoA); Navigationssystem; MIMO; Kalibrierung; GSM; Funkkanäle; Frequenzbereich; Drahtloses Netzwerk; Bluetooth; Ausbreitung; Allgemeines

For the sake of new radio devices to conform to respective standards, implementing functionality such as cognitive radio, Long Term Evolution beyond 2x2, or Global Navigation Satellite Systems, a demand for extensive testing arises. A promising solution is the validation inside an Over-the-Air testbed that creates a virtual electromagnetic environment using wave-field synthesis. This paper analyzes the polarimetric accuracy of a wave field generated by a hemispheric (3D) antenna arrangement. As most radio devices have a flat shape (e. g. smart phones, tablets, compact cognitive radio antennas) or a metallic backplane along a defined surface, the complexity of the optimization problem can be reduced. Analyzing the wave-field synthesis accuracy, it has to be kept in mind that for most radio devices the signal-to-noise ratio is limited in a range between 0-30 dB, which indirectly defines the upper limits of the required wave-field synthesis accuracy.