L.I. Williams

TL;DR: In this article, the authors concentrate on the antenna-measurement research activities, and provide information on the design and development of a unique planar-near-field range, which has received a considerable amount of interest in the bipolar near-field method.

TL;DR: In this paper, a linear spiral sampling for bipolar planar near-field antenna measurements is proposed, which is, depending on range implementation, the most rapid polar near-filed data acquisition mode.

TL;DR: A novel customized bi-polar planar near-field antenna measurement technique is presented as an alternative to the plane-rectangular and plane- polar measurement techniques, offering a large scan plane size with reduced "real estate" requirements and a simple mechanical implementation resulting in a highly accurate and cost-effective antenna measurement and diagnostic system.

TL;DR: The data processing algorithms investigated include both interpolatory and non-interpolatory algorithms due to the a typical arrangement of the bi-polar near-field samples, which offers a large scan plane size with minimal "real-estate" requirements and a simple mechanical implementation.

TL;DR: In this article, a bi-polar near-field measurement scanner has been implemented at the University of California, Los Angeles (UCLA), which consists of an antenna under test (AUT) mounted to a rotary positioner which rotates about one axis and a probe antenna mounted on a probe arm which turns about a second axis.