This writeup uses a trapped triband Yagi to show how to create wideband
models for antennas with coils:
http://ham-radio.com/k6sti/wbc.htm
The method uses an updated version of my coil inductance and Q
calculator. It has many changes, including accuracy improvements, new
dielectric configurations, plotting, and special optimization for
wideband RLC coil models:
http://ham-radio.com/k6sti/coil.htm
Brian
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