RF Toolbox is an antenna design and electronics calculation package
for engineers, amateur (ham) radio operators, and other radio
enthusiasts, as well as those in the communications professions. It
takes you step by step through the design of the following types of
antennas:
Dipole
Fat Dipole
Yagi
J-Pole
Super J-Pole
Log Periodic
Cubic Quad
Vertical
It also performs the following calculations:
Coil Design
LC Filter Design
Transmission Line Loss
L Matching Networks
Pi Matching Networks
Impedance Calculations
Wire Gauge and Resistance and Voltage Drop Calculations