You can easily extend an antenna to stack
by command Make Stack. Follow the dialog box to make
vertical/horizontal stack antennas. The design of the original antenna
is unchanged, so you can easily make up various formation.
To make your stacked design permanent, push the Make new
description as new antenna button in the Stack window. If
you have done this once, you no longer get it back to the original
design, that is, a single antenna. This is used to implement a phased
driven or a unbalanced driven antenna.
In either case, the number of antennas N is given by [number of
horizontal] multiplied by [number of vertical].
This means that:
Number of pulses: •N
Number of wires: •N
Number of sources: •N (voltage = 1/N, identical phase)
Number of lumped-constant: •N
When making a vertical stack, you can select one of the three
ways to set the reference height. It is not taken into consideration
in the free space calculation, but is used to define the antenna height
in the calculation with ground.
|