At 02:23 PM 7/29/2006, Red wrote:
>In addition to stacking, feed one through an adjustable phasing network
>to steer the pattern to the desired vertical angle.
>73 de WOØW
In some cases, one might not even need the phasing network. You could set
one antenna to present a inductive feedpoint impedance and the other to
have a capacitive reactance, and get your "phase shifter" for free.
Truly, adjustable element lengths in a 2D array (i.e. a stack) gives you a
whole raft of interesting possibilities that are alien to traditional
The challenge will be in getting practical experience. Modeling it is
simple enough, but with those "extra knobs to twist" it's not clear yet
what will prove to be the most useful types of pattern.
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