Research papers

We present the latest enhancements in the GRASP software package for analysis and design of electrically large antennas and platforms. The focus is on the hybridisation of efficient and accurate methods which allows antenna systems with very high complexity to…

Periodic surfaces (identical array elements) have existed for several decades. However, in recent years, there is an interest in replacing such surfaces with quasi-periodic surfaces (non-identical array elements). Quasi-periodic surfaces provide additional degrees of freedom and can be used to…

This paper describes the detailed electromagnetic modelling and design of a scatterometer to be used at the European Space Agency, for characterization in transmission and reflection of smooth as well as rough materials in the 50-750 GHz region. The scatterometer…

The pattern of a 265 mm x 200 mm breadboard made of 35 x-polarized and 32 y-polarized Vivaldi antennas located above a finite ground plane is computed and measured at 6.9 GHz. The breadboard constitutes the feed array illuminating a…

We report an RF benchmark study of large deployable antennas for a contoured beam mission in C band. With conventional solid shaped reflector antennas being limited to diameters of 3 m, we investigate solid shaped reflector antennas with aperture diameters…