16×16 Reflectarray & Code -- 2

I need a complete CST Studio Suite 2021 workflow that starts with a single 12 × 12 mm unit cell and ends with a fully simulated 16 × 16 reflectarray, all driven by PIN-diode control logic written in MATLAB.

Geometry & materials
• Stack order: 35 µm copper patch, 1.6 mm FR-4, 35 µm ground, 0.8 mm FR-4
• On the underside place a MACOM MADP-000907-14020 PIN diode plus an RF choke that links back to the patch through vias.

Performance target
The critical metric is a phase shift of 180° ± 20° across 3 – 5 GHz. Please make sure the simulation reports both S-parameters and far-field patterns so I can confirm this window is met before we scale up.

After validating the unit cell, replicate it into a 16 × 16 lattice, export the array model, and verify global performance in CST.

MATLAB deliverable
Write a concise script that toggles each diode between ON and OFF states, updating the CST excitations (or an exported scattering-matrix) so I can sweep beam-steering cases from MATLAB directly.

Deliverables
• CST project files for the standalone unit cell and the 16 × 16 array
• MATLAB (.m) code controlling the diode states
• PDF report summarising geometry, simulation setup, S-parameters, far-field plots, and confirmation of the 180° ± 20° phase requirement

Please keep screenshots, CST version info, and any custom macros inside the PDF so everything is reproducible on my side and should be editable.