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Yagi Antenna Question
Tom
I read as far as the word "tho a" and you made my day, you confirmed what I suspected that all antennas are based around yagis and not about antennas in general which is exactly the point I made earlier.But your explanation tho correct for a yagi is not all encompasing. If you contend that your explanation over rules the mesh or field aproach i.e a reflector must always be a longer radiator completely avoids the essence of the first question i.e long versus shorter reflectors. When aproached from a meshed circuit point of view it can be seen that coupling of radiators behind the dipole generator can easily produce an element(s) of a shorter length.since as you stated a reflrctor does not reflect but creates a reactive field in conjuction with other elements in the immediate field to satisfy Newton's law The rest of your reply I consider irrelavent to what was previously stated and thus diversionary to the subject at hand. If you read the initial post carefully you will note that his question revolved around the length of reflector (s) which in essence calls for a different aproach to the traditional format based around a yagi .It is for this reason that such questions are raised by those who apply deeper thought to the subject, ask this question over and over again and cannot be explaned unless coupling of individual fields are brought into play instead of introducing personal rules similar to front to back ratios which is a point ratio of energy efficiency rather than a overall array energy efficiency. and so on. Art |
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