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ORIGINAL MESSAGE:
Roy Lewallen wrote: That's an interesting point. Suppose you have a two-element driven array with the elements spaced a quarter wave apart and fed 90 degrees out of phase. This produces a cardioid pattern, which has a deep null. Is the element toward the direction of the null "reflecting" and the other one "directing"? If so, what are they "reflecting" and "directing"? *********** REPLY SEPARATOR *********** Trying to bridge the gap between engineering and English, I would suggest this analogy: A mirror reflects light energy fed to it, while a light bulb takes electricity and turns it into light. Either a mirror or a light bulb can be used to send light in a desired direction, but only one is "reflecting" that energy in the usual sense of the word. Likewise, only the mirror is "re-radiating" energy, much like a yagi's reflector does. The analogy is not perfect but that's what the words mean to me. 73, Bill W6WRT |
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