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Generalized test-zone field compensation

: Gemmer, T.M.; Heberling, D.


Institute of Electrical and Electronics Engineers -IEEE-; Antenna Measurement Techniques Association -AMTA-:
41st Annual Symposium of the Antenna Measurement Techniques Association, AMTA 2019. Proceedings : October 6-11, 2019, San Diego, California, USA
Piscataway, NJ: IEEE, 2019
ISBN: 978-1-7281-3001-9
ISBN: 978-1-7281-4527-3
ISBN: 978-1-7281-4525-9
6 S.
Antenna Measurement Techniques Association (AMTA Annual Meeting and Symposium) <41, 2019, San Diego/Calif.>
Fraunhofer FHR ()

Antenna measurement errors occur due to reflections and diffractions within the measuring chamber. In order to extract and correct the undesired signals, a technique based on test-zone field compensation and spherical wave expansion is applied to Compact Antenna Test Range (CATR) and Spherical Near-Field (SNF) measurements of a base transceiver station antenna. The required spherical test-zone field is acquired by simulating the corresponding measurement environment with the multi-level fast multipole method. Due to the numerical complexity of the problem, only the parts of the chamber with a significant influence on the measurement results are modeled. Comparing the determined directivities after applying the correction method, an exact overlap is achieved between the SNF and CATR solution.