Antenna Fundamentals

Start here. The core ideas behind every antenna: how a wire turns current into radio waves, what resonance and impedance mean, and how we describe an antenna's performance.

1. 1 How antennas radiate
2. 2 Resonance and length
3. 3 Impedance, SWR and matching
4. 4 Polarization
5. 5 Gain, directivity and radiation patterns