Research papers

Two new efficient optimization schemes for direct optimization of printed reflectarrays are presented. Instead of optimizing directly on the geometry of the array elements, continuous functions are envoked to represent the aperture field from which the geometry of the array…

An efficient algorithm for analysis and optimization of rotationally symmetric reflector antennas, possibly including 3D support structures and/or waveguide components, is presented. The high efficiency is obtained by using a domain decomposition approach where each region of space is characterized…

An accurate and efficient direct optimization technique for the design of contoured beam reflectarrays is presented. It is based on the spectral domain method of moments assuming local periodicity and minimax optimization. Contrary to the conventional phase-only optimization techniques, the…

In this paper, we present an efficient higher-order BoR-MoM in which the unknown surface current is discretized using hierarchical Legendre basis functions, that are adapted to the circular symmetric geometry. Furthermore, the shape of the generatrix is represented by up…

The 3D reconstruction algorithm is applied to a slotted waveguide array measured at the DTU-ESA Spherical Near-Field Antenna Test Facility. One slot of the array is covered by conductive tape and an error is present in the array excitation. Results…