Plain-language answer: An air-core inductor forms its magnetic field without a magnetic core, avoiding ferrite saturation and core loss.
Why the real component differs from the ideal
It can handle strong RF current, but needs more turns or physical volume and still has resistance, distributed capacitance, coupling, and mechanical sensitivity.
What to verify
Preserve coil diameter, pitch, conductor size, spacing, orientation, and clearance from metal.
The common mistake
Compressing or mounting the coil differently and expecting unchanged inductance and Q.
Component boundary
Use frequency-specific ratings and the exact topology, material, geometry, load, power, duty cycle, and cooling. Begin at low power and stop for heating, odor, arcing, distortion, or unstable measurements.
