Two-Dimensional Far-Field Mathematical Absorber Reflection Suppression
Authors: S.F. Gregson, G.E. Masters, A.C. Newell, G.E. Hindman
Publication: The Loughborough Antennas and Propagation Conference, 2014
Copyright Owner: IET
During recent years, far-field mathematical absorber reflection suppression (FF-MARS) has become a widely adopted and accepted technique for suppressing spurious range reflections within far-field and compact antenna test ranges (CATR) [1, 2, 3, 4]. Far-field measurements are particularly prone to the effects of range-reflections [5] which, when combined with the increase in signal to noise ratio that MARS often provides, makes this form of post-processing particularly beneficial to these applications [6]. FF-MARS processing is rigorous with its theoretical basis being resolutely founded within standard cylindrical near-field theory [6, 7]. FF-MARS offers the unique, and particularly pertinent for far-field applications, attributes of being able to process one-dimensional, singularly polarised, mono-chromatic, frequency-domain, far-field data without approximation or loss of generality. Hitherto, for cases where two-dimensional far-field data needed processing, recourse to standard spherical-MARS (S-MARS) was unavoidable [8, 9]. However, there are occasions when complex spherical mode based post-processing is unavailable, undesirable, or even inappropriate (such as when only a small portion of the far-field sphere is acquired, or when only a single polarisation component is available) and under these circumstances the ability to process two-dimensional data with this new FF-MARS technique can become highly desirable. For the first time, this paper shows how the existing one-dimensional FF-MARS technique can be extended to enable two-dimensional data to be processed with the success of the measurement and post-processing technique being illustrated with results obtained from actual range measurements.
You have requested a Reprint of an IET Paper
Copyright 2014 IET. Reprinted from The Loughborough Antennas and Propagation Conference, 2014.
This material is posted here with permission of The Institution of Engineering and Technology (IET). Such permission of the IET does not in any way imply IET endorsement of any of NSI-MI Technologies' products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IET.
By choosing to view this document, you agree to all provisions of the copyright laws protecting it.