Denny you make my point by pointing out that radiation can occur when
parasitics are not in parallel but for all of this the yagi is a firm
favorite
as well as the boomless quad wire directive antenna which is just a
variation
of stacked dipoles bent at the ends.. Why don't you model a vertical
dipole
with a succession of one degree change in the vertical direction and
note what changes occur, I'm sure you will be surprised at the results
even tho parassitic elements are not involved.
As far as designers not being up to speed in time they will change
trust me
Art





Denny wrote:
Well, there is the Moxon Rectangle, Discone, Sloper, Delta Loop, Big
Wheel, Circular Loop, Orthogonal loops with periodic feed, Vee,
Rhombic, Helix, Parabolic Dish, Cone with spiral lip, G String, Surface
fed half sphere, BirdCage, Lazy Vee, Moon Bounce, and a bunch of others
that escape me at the moment...

It would seem that many antenna designers, some of whom would not
recognize a real time vector if it poked them in the eye and then
scrawled a table of Naperian Logarithms on the wall paper, have already
gone ahead without waiting on directions from open minds...

denny / k8do

I spend time with EZNEC trying my antenna theories - most of which are
dogs, but once in a while I get lucky...
No, I have not done the modeling iterations for off the vertical as
fine as 1 degree steps as you suggest... Not sure what surprises you
are alluding to as I have spent considerable time modeling leaning
vertical elements - and then built arrays that sprawl across hundreds
of feet of swamp... I am actually running my EZNEC modeled antennas on
160...

cheers ... denny / k8do