Mini Whip Antenna
The figure shows a sketch of a typical MiniWhip setup. It consists of a mast of a few meters high, ideally in the open field, with on top of it a small metal plate and an amplifier, together in a plastic enclosure (the actual MiniWhip). A coaxial cable runs from the MiniWhip down along the mast to a receiver.
Read more about the Fundamentals of the MiniWhip antenna in PA3FWM's amateur radio web site.
Simple and better circuit for MiniWhip antennas.
Aktivantenne „Mini-Whip" reloaded (German) by DL4ZAO
The pa0rdt-Mini-Whip by PA0RDT
More links about active antennas:
Active antenna overview by G8JNJ.