3D current reconstruction technique
The 3D reconstruction technique uses higher-order basis functions and curved quadrilateral patches. It makes it possible to reconstruct field and surface currents on arbitrary surfaces enclosing the AUT, including conformal surfaces when necessary, with a spatial resolution which can be better than half a wavelength.
- Input measured field (in amplitude and phase) on any acquisition surface, incl. truncated and irregular surfaces
- Field reconstruction on arbitrary surfaces enclosing the AUT and conformal to it
- Applicable to electrically small and medium sized antennas
- Effective memory use
The planar reconstruction technique involves a spherical-wave to plane-wave transformation. The field is reconstructed on planar surfaces in front of or around the AUT, with a spatial resolution which can be better than half a wavelength.
- Input measured field (in amplitude and phase) on a full sphere
- Field reconstruction on a plane or combination of planes
- Applicable to both electrically small and large antennas
- Extremely fast computation with low memory requirements
Filtering of undesired radiation
Efficient post-processing of measured fields by computation of clean antenna patterns where reconstructed currents on cables, mounting fixture or selected areas of the reconstruction surface are suppressed.
Enhancement of measured patterns
Compute noise-free patterns radiated by the reconstructed currents - the conformal reconstruction surface acts as a physics-based filter that includes the shape of the AUT.
Jakob Rosenkrantz de Lasson
- Predicted and Measured Antenna Patterns of the European Large Deployable Reflector
- A Doubly Curved Modulated Frequency Selective Surface Sub-Reflector in a Dual-Band (Tx/Rx) Multiple-Beam Reflector Antenna
- RF Modeling and Measurements of a Reflectarray for Synthetic Aperture Radar for Earth Observations