Measuring Wide Angle Antenna Performance Using Small Cylindrical Scanners

Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany

Proceedings: EuCAP 2009

Pages: 5Language: englishTyp: PDF

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Gregson, S. F. (Nearfield Systems Inc, 19730 Magellan Drive, Torrance, CA 90502, USA)
Parini, C. G.; Dupuy, J. (Queen Many, University of London, School of Electronic Engineering & Computer Science, Mile End Road, London, E1 4NS, UK)

A near-field measurement technique for the prediction of wide-angle asymptotic far-field antenna patterns from data obtained from a modified small combination planar/cylindrical near-field measurement system is presented. This novel technique utilises a simple change in the alignment of the robotic positioners to enable near-field data to be taken over the surface of a conceptual right conic frustum. This configuration allows existing facilities to characterise wide-angle antenna performance in situations where hitherto they could have been limited by the effects of truncation. This paper aims to introduce the measurement technique, present a measurement campaign, describes the novel probe-corrected near-field to far-field transform algorithm before presenting preliminary results. As this paper recounts the progress of ongoing research, it concludes with a discussion of the remaining outstanding issues and presents an overview of the planned future work.