Tian, Z R; Gregson, S (2019) Examination of the Effectiveness of Mode Orthogonalisation and Filtering for Scattering Suppression in Antenna Measurements Through Computational Electromagnetic Simulation. In: 2019 13th European Conference on Antennas and Propagation (EUCAP), 31 March 2019 - 5 April 2019, Krakow, Poland.

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Abstract

Reflections in antenna measurement ranges comprise the most significant term within the overall uncertainty budget. For over a decade, a frequency domain mode filtering based technique has been utilized to reduce range reflections. Although this technique has been extensively examined and verified empirically by measurements, relatively little verification by computational electromagnetic simulation is available in the open literature. In this paper, we developed an efficient electromagnetic (CEM) model of the measurement configuration, using a full-wave CEM solver. The purpose of this is to construct a truth-model to provide a firm basis for detailed quantitative examination of the scattering suppression technique. The modelling technique is discussed in detail and initial results are presented which show very good agreement between the ¿true¿ far-field pattern of the antenna in free space and that of the far-field of the antenna when perturbed with the presence of a scatterer and applying the scattering suppression process.

Item Type:	Conference or Workshop Item (Paper)
Keywords:	antenna, propagation, measurement
Subjects:	Electromagnetics > Wireless Communications
Divisions:	Electromagnetic & Electrochemical Technologies
Last Modified:	19 Nov 2019 15:31
URI:	https://eprintspublications.npl.co.uk/id/eprint/8565