Somewhere in the distant past I read that the radials of one antenna cannot overlap those of another. Is this really true? There are some folks who indicate that if the radials are insulated it shoul
Overlapping is OK. The only problem might develop when corrosion causes intermittent contact between radials. Of course, insulated wires avoid this situation, in most cases. Why not put down insulate
" Individual ground systems are required for each tower of a multielemnt array . If the individual systems would overlap , the adjoining systems are usually terminated in a common bus." Under fig 20
--Original Message-- If you have overlapping radial systems, inevitably, there's going to be some coupling between them (whether they are insulated or not, or buried or not, or elevated or not). As s
--Original Message-- A broadcast directional array would be a good example of something where you want the mutual coupling to be very stable, since that determines whether your nulls and lobes stay p
"terminated in a common bus". I take that to mean they are tied together rather than overlap without touching? Ken _______________________________________________ ____________________________________
Yes - nothing overlaps without touching - visualize two radial fields lying so they overlap at about 1/4 of the diameter , then draw a straight line across where they overlap perpendcular to a line
Is it not possible to discuss this question by considering the design of two UHF verticals mounted on a car? The corollary of the original question would then suggest this is not possible, since you
I agree with you. It looks like to me that a half square could be thought of as 2 verticals each with one radial and the 2 radials attached or bonded together at their ends. Thus 2 verticals spaced a
In most phased array schemes, you're not looking for forward gain as much as reverse null depth. You can have huge phasing errors with small effect on gain: The gain (in dB) is 20*log10(1+cos(theta))