Official repository for TongDou, a real working desktop companion robot. Schematics, prototype media, and phased open-source releases.
Analytical synthesis (Mathcad) and circuit simulation (Micro-Cap) of a 100 kHz passive LC filter based on Foster's 1st canonical form with a 110 kHz transmission zero and 50 Ohm matched impedance. Released under CERN-OHL-P v2.
Design, analytical calculation, and 3D electromagnetic simulation of an H10 (TE10) rectangular waveguide section operating at 4.2 GHz (C-band). Includes Mathcad worksheets, SolidWorks CAD/STEP models, CST Studio Suite simulation project, and full technical documentation.
Design, analytical synthesis, and numerical simulation (Cadence AWR MWO) of a reactive L-section impedance matching network for the 2SK2974 UHF power MOSFET at 1.2 GHz, transforming complex sub-ohm port impedances to 50-ohm terminals.
Compact 5.8 GHz microstrip-fed printed dipole antenna with integrated ground balun and via fence for ISM/FPV applications. Features CST Studio Suite EM simulation project, Altium Designer PCB layout, analytical transmission line calculations, S-parameters, VSWR, and far-field radiation patterns under CERN-OHL-P v2.
Wohler-b Drone multi-turbine - Alliance Edition - Licence : CERN Open Hardware - P ( Permissive)
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