A Microwave Holographic Procedure for Large Symmetric Reflector Antennas Using a Fresnel-Zone Field Data Processing

Abstract EN

In this paper we propose a new holographic procedure for the diagnostic of large reflector antennas, based on the direct use of the Fresnel-field pattern.

The relation leading from the Fresnel field to the current on the reflector surface is formulated in the least-squares sense as a discrete data inverse problem and then regularized by using a singular value decomposition approach.

A detailed theoretical analysis of the problem and full assessment of the presented technique are provided.

Simulations are carried out by using the radiative near-field pattern generated with a commercial software.

Results show good accuracy and robustness to noise for the retrieval of the panel-to-panel misalignment of a reflector antenna.