Bent Dipole Square  This is an interesting idea for an easily
field erectable antenna array. It started as an array of 4 half
wave dipoles in a square. The figure shows this sort of scheme,
with the corners 7 meters apart, and the dipoles being 5 meters
long.   Then, I realized that you have these feed lines hanging
down in the middle of each dipole which will certainly screw up
the pattern, and also has structural problems. Why not move the
feed lines to the corners, and run the feed line down the pole?
The dipole gets bent, which will change it's pattern (and feed
point impedance), but the structure is a LOT better.   What with
modern analysis tools, the weird impedances should be easy to
figure out. Then, the challenge would be coming up with a way to
feed the beast, and to look at the patterns. For such a simple
array, which can't be rotated, you don't really want narrow
beams. Rather, what you want is beamwidths around 90-120
degrees, decent front to back ratio (to suppress interfering
signals from the w