15-10-2017, 08:38 PM
Hi all,
I have limited space (in the suburbs) and long yagi antenna are too long. (and narrow band).
I've been battling with a Short Backfire Antenna made out of a 2m satellite dish.
Pixture at www.unixservice.com.au/hamradio/antenna
It performs about 6db worse than the bi-quad pixtured also.
I have a much bigger piece of that fly-screen door ~40mm mesh, 1.5 x 1.2m.
I could put it on the satellite dish mount as a co-linear back screen.
Here is the problem:
It is big enough for three dipoles wide and four dipoles deep or down.
The feed for two dipoles wide and four down is easy.
But, how do you do three wide by four down?
Any thoughts?
A google search for "phased array" is all but useless.
Alan VK2ZIW
I have limited space (in the suburbs) and long yagi antenna are too long. (and narrow band).
I've been battling with a Short Backfire Antenna made out of a 2m satellite dish.
Pixture at www.unixservice.com.au/hamradio/antenna
It performs about 6db worse than the bi-quad pixtured also.
I have a much bigger piece of that fly-screen door ~40mm mesh, 1.5 x 1.2m.
I could put it on the satellite dish mount as a co-linear back screen.
Here is the problem:
It is big enough for three dipoles wide and four dipoles deep or down.
The feed for two dipoles wide and four down is easy.
But, how do you do three wide by four down?
Any thoughts?
A google search for "phased array" is all but useless.
Alan VK2ZIW