Transformer of the Beverage Antenna
Transformer of the Beverage Antenna is one of the important
parts of the antenna. Transformer should work at all frequency
range of the antenna. Transformer should stand power going to
the antenna. It is preferably use to transformer with insulated
windings for any Beverage Antenna. Figure 4
shows Beverage Antenna with transformer with insulated windings.
Such transformer provides electrical insulation the antenna from
transceiver. It causes less noise from electrical interferences
and provides additional protection of the transceiver from lightning
discharge. However to make such transformer is not an easy task.
Thereof I used unsymmetrical RF transformer 1:9.
shows schematic of classical unsymmetrical RF transformer 1:9.
The transformer is winding by a triple wire onto a ferrite core.
It may be a ferrite ring or ferrite rod. Transformer may contain
7- 15 turns.
Quantity of turns depends onto size and permeability
of the ferrite core and frequency range of the antenna.
Figure 5 Schematic of Classical Unsymmetrical RF Transformer 1:9