I have enjoyed working with ELNEC and EZNEC and modeled my favorite wire
antenna, a full-wave antenna, fed a quarter-wave from one end. In free space
it's a clover leaf, and above real ground it's got a "double kidney bean"
pattern with nulls off the ends. Interestingly enough, the models show the
same patterns when it's center fed. I haven't modeled that antenna by moving
the feedpoint between center and 1/4 wave, but I suspect that for a given
length of wire, it will radiate the same, regardless where it's fed.
Maybe I'm generalizing a little too quickly, maybe not. Antenna scholars on
this forum will set it straight.
73, Bert N4CW
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