Planar Spiral Nanoinductor — On-Chip RF Inductance & Q-Factor

Squeezing an inductor onto a chip means fighting a hard trade-off: a spiral small enough to fit next to a transistor also has too little loop area to store much magnetic energy, and its copper trace loses more of that energy to resistance at gigahertz frequencies. This simulator renders a real 3D on-chip nanoinductor — a flat spiral or a stacked vertical solenoid — and drives it with the same modified-Wheeler inductance formula, skin-effect resistance model, and self-resonant-frequency calculation used in real RF chip design, so you can see exactly how turns, diameter and drive frequency trade off against each other.