Examination of the effectiveness of FF MARS in a CATR through electromagnetic simulation

Stuart Fraser Gregson; Clive G. Parini; Allen C. Newell

Examination of the effectiveness of FF MARS in a CATR through electromagnetic simulation

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Author(s): Stuart Fraser Gregson^{1, 2} ; Clive G. Parini² ; Allen C. Newell¹
- Affiliations: 1: NSI-MI Technologies , 19730 Magellan Drive , Torrance , CA , USA ;
  2: School of Electronic Engineering & Computer Science , Queen Mary University of London , London , UK
Source: Volume 12, Issue 4, 28 March 2018, p. 542 – 548
DOI: 10.1049/iet-map.2017.0595 , Print ISSN 1751-8725, Online ISSN 1751-8733

Received 26/06/2017, Accepted 03/11/2017, Revised 25/08/2017, Published 07/11/2017

For more than a decade now, a measurement and post-processing technique involving modal filtering, named mathematical absorber reflection suppression (MARS), has been used very successfully to identify and subsequently extract range reflections in spherical, cylindrical and planar near-field antenna test systems and far-field (FF) and compact antenna test ranges (CATRs). Much of the early work concentrated on verification through experimental testing; however, some additional validation was performed using computational electromagnetic (EM) simulations. These considered first FF and subsequently near-field cases. The recent development of an accurate, flexible EM simulation tool that enables the simulation of ‘measured’ FF pattern data as obtained from using a CATR has, for the first time, permitted the careful verification of the FF-MARS technique for a specified antenna under test (AUT) and CATR combination. This study presents simulated ‘measured’ FF antenna pattern data in the presence of a large scatterer and then verifies the successful extraction of the scattering artefacts. In addition to considering range reflections, feed spill-over is also treated. Results are presented and discussed.

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Examination of the effectiveness of FF MARS in a CATR through electromagnetic simulation

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