A dipole radiates above a metal reflector. A patterned dielectric cover changes the phase of the outgoing field across the aperture. This example connects that material pattern to the direction of the main radiation lobe.
Historical design visualization. This is the 441-latent-variable trajectory on a wavelength/20 mesh. The plotted response is directivity; it does not establish realized gain, efficiency or broadband performance.
Read the model
| Part | Meaning |
|---|---|
| Radiator | An electric dipole above a metal reflector |
| Design region | A dielectric cover above the source |
| Parameterization | A latent grid mapped into a spatial permittivity field |
| Measurement | A near-to-far-field transform and an angular directivity cut |
| Objective | Concentrate radiation toward the selected direction while penalizing other directions |
A radiation cut shows how intensity varies with angle. Directivity compares directional intensity with total radiated power; it does not include every loss or mismatch that would enter realized gain.
Follow the descent
Run the related example
The versioned beam-steering source provides a short CPU setup. Run it from a matching source checkout with the example dependencies installed:
python -m pip install -e ".[optimization]"SMOKE=1 JAX_PLATFORMS=cpu PYTHONPATH=. python validation/tmtt_paper/beam_steering_superstrate.pyThe short setup uses a coarse mesh and a few optimizer steps. It exercises the source workflow and produces a pattern figure; it does not reproduce the archived latent-variable movie or validate its numerical values.
Try changing: the initial cover profile or target direction. Check the whole pattern, total-power normalization and collection-surface placement. See Far-field & RCS for the measurement and Gradient behavior for differentiation limits.
Evidence and provenance
The exact simulation source revision is not established by the public media bundle. The clips preserve presentation-era results; no new mesh, time-record or independent-solver validation accompanies them. Raw latent histories and field arrays are not included. In particular, a falling objective alone does not establish the accuracy of the final RF design.
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