[Antennaware] quad

[John Kaufmann]

Lane Zeitler wrote:

> Does anyone have any data on how much gain a 2 ele quad will have with a
> driven loop and director, vs. a driven loop and reflector?


Here are the results of a couple of quad models in free space:

2 element quad with reflector: gain = 7.29 dBi, F/B = 20 dB
2 element quad with director: gain = 6.22 dBi, F/B = 4 dB

The gain and F/B can be varied a bit by tuning the parasitic element.
However, it appears to be impossible to improve the F/B of the quad with the
director beyond the relatively poor 4 dB.

You can see why nobody uses a director in a 2 element quad.

73, John W1FV