Research papers

A new antenna diagnostics technique has been developed for the DTU-ESA Spherical Near-Field Antenna Test Facility at the Technical University of Denmark. The technique is based on the transformation of the Spherical Wave Expansion (SWE) of the radiated field, obtained…

In a quasi-optical network the beams are usually focused and guided through the system by means of curved and planar mirrors. Physical Optics (PO) is an accurate analysis tool for these elements, but is only valid for perfectly conducting surfaces…

A new antenna diagnostics technique based on the transformation of the spherical wave expansion (SWE) into the plane wave expansion (PWE) is proposed. The new technique allows the recovery of the plane wave spectrum in the visible region, and in…

The present paper describes the determination of the scattering from the LICEF antenna elements on the SMOS satellite taking into account that the solar panels rotate during the flight of the satellite. The task is well suited for a ray…

The radiation patterns of satellite antennas may be highly influenced by scattering in the satellite, its payload and its solar array. By ray tracing techniques (GO/GTD) and applying orbit predicting data it is shown how it is possible to model…