Reconstruction of Antenna Radiation Patterns From Phaseless Measurements in Nonanechoic Chambers

Abstract

Antennas are generally measured in anechoic chambers, where walls are covered with appropriate absorbing materials so that reflections are minimized. However, different methodologies have been proposed to process the data measured in nonanechoic conditions with the aim of reconstructing the free-space antenna radiation pattern. The objective of this communication is to evaluate the conditions under which those methods can be extended to the case where only amplitude data is available and phase is estimated using the Hilbert transform. IndexTerms-Amplitude-only measurements, antenna measurements, Hilbert transform, minimum phase systems, pattern reconstruction.

Rapid Test Method for Multi-Beam Profile of Phased Array Antennas

“…Recent progress [ 10 , 11 , 12 ] has been made based on experimental environment and focused on the fast measurement of a single antenna pattern in anechoic chambers or nonanechoic chambers. Some efficient methods, known as antenna pattern interpolation, are implemented to reconstruct the 3D pattern from 2D pattern, by reducing the number of pattern cuts or sampling points being measured [ 13 , 14 ].…”