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Hi members of the antenna group,
Seems like the group is getting bogged down into sniping, here another chance to get back to antennas. I tried with another post yesterday but the choice of attention is still to those who want to snipe. With a driven element you have two circular radiation patterns at each section. Before you start to focus a beam for gain by adding parassitic elements you must first collect maximuml radiation to the desired direction. Sooooooooooooo............................ with these two circular patterns from the driven element you fold the pattern in the middle so that both patterns are in the same direction and the same shape i.e a circle that expands to a larger circle but holding on to a particular half power beam width which is an included angle. So when we start to add parassitics we are able to deal with this CIRCLE of radiation which then focusses by squeezing of the pattern since it cannot add to the initial pattern. I think the above clearly shows that for recovering of radiation from the rear direction in any form must produce a radiation pattern to the front by retaining a circular pattern. Now I have achieved such a transformation of a driven element with a reflector to produce an initial circular pattern via computor analysis which agrees in my mind that rear radiation does nothing fto add to the forward radiation lobe. This is contrary to the thinking of some pseudo experts on this newsgroup. So what is really happening, take a shot at it even if you do not consider your self an expert since we want your participation as well as the experts who will probably hang back to be guided by what others have to say. Now we can ignore this posting since it is about antennas. We can use a sniping tactic by changing the subject to a direction that you want . You can resort to saying I don't understand the question.. We can debate alternative arguments where you tend to disagree and show why e.t.c . So what do you want for this newsgroup? ( Are you listening Walt) An augument, a debate as to why a radiation pattern changed from circucular or do you prefer to extend the threads from slow code and others of his type who are not here to talk about antennas. Or should we await a similar question to get back on track from one of the old members of this newsgroup who are unhappy with the state of things?. Your choice guys ! Are you a follower or a leader? Regards Art |
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