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#1
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Gentlemen
I have in the past alluded not only radiation from a straight element but also the ADDITION of radiation occuring from a bent element. Nobody has commented on the authentisity of this statement and I have not come acros anything in my own collection of books. Now my present antenna consists of various loops connected in both a clockwise and clockwise radiation form such that the circular polarisation cancells leaving pure vertical polarisation.. The loops are separatred in a way that intercapacity of the spiral loops is reduced as well as circular cancellation All of this is based on my gut feeling that R.F.current flowing around a circular radiating element. What I ask for for those who have a deeper background of R.F. is verification of my assumption that extra radiation becomes available. Appreciate any comments on this irregular aproach as I cxannot find guidance in the books. A serious question regarding added radiation from an element in the hope that insight is provided even tho it may expose the fallacy of my aproach. Thanks in advance Art |
#2
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On Mon, 16 Aug 2004 18:05:41 GMT, "
wrote: verification of my assumption that extra radiation becomes available. Hi Art, Extra? From where? What is the source? If it is the same source, then it is not Extra, but simply managed to fit a need. In this sense you still have to balance the budget of what you got, and what you radiate and what you lose (to heat). The budget does not allow Extras. The budget does however allow you to transfer balances as long as you maintain the same total. In this sense, it is like stacking elements with the correct phase relationships to move radiation that would have gone to the clouds, towards the horizon. You are still radiating the same power, but the relationship change has netted more of it going in a direction more suitable to your needs. Now, as to the matter of bends in the antenna doing this; then the literature is rich in examples to this matter. The Franklin antenna comes to mind. It has lots of bends specifically tailored to create this budget shift. It has been around for 70 or 80 years? 73's Richard Clark, KB7QHC |
#3
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#4
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Points raised noticed and placed in my thoughts bag to digest.
With respect to radiation I revolve solidly about accedleratio during a point in time, accelleration required to negotiat a turn which even at constant speed create acceleration and lastly arangements that create more current without the loss of energy of which I see as coupling. Since I am pretty much self taught because of a loss of memory onslaught it is easy to build on sand without a true geoligists report which is not available when one works alone. Thus I am curious as to where exactly I have gone astray by not having a thorough education in R.F. workings. So if there is cycliic increases of radiation per unit length then I see the same unit length in spiral form introduces an addition vector of forces that I translate into radiation, I have a history of not being able to adequately explaining my thought so hopefully the above will assist in explaining my thought processes even tho they may seem totally rediculus to those edu8cated in the field of whom I ask for correction. From how I see it I have not viotated any laws with this thinking but now is the time for me to put things in there proper place.and accepted without rancour. Regards Art "Roy Lewallen" wrote in message ... wrote: Gentlemen I have in the past alluded not only radiation from a straight element but also the ADDITION of radiation occuring from a bent element. Nobody has commented on the authentisity of this statement and I have not come acros anything in my own collection of books. Now my present antenna consists of various loops connected in both a clockwise and clockwise radiation form such that the circular polarisation cancells leaving pure vertical polarisation.. The loops are separatred in a way that intercapacity of the spiral loops is reduced as well as circular cancellation All of this is based on my gut feeling that R.F.current flowing around a circular radiating element. What I ask for for those who have a deeper background of R.F. is verification of my assumption that extra radiation becomes available. It does not. If you apply 100 watts to an antenna, 100 watts is available to radiate, less any amount dissipated as heat. This applies to EVERY antenna, from a rubber duckie to a zillion-element Yagi with a boom you can walk on. No bending, adding of elements, supergain, loops, or magic will give you any "extra radiation" above that. All you can do with all the possible tricks there are is to concentrate some of that 100 watts in some directions at the expense of others. Appreciate any comments on this irregular aproach as I cxannot find guidance in the books. A serious question regarding added radiation from an element in the hope that insight is provided even tho it may expose the fallacy of my aproach. My statement above is based on the law of conservation of energy, which it sounds like you're trying to violate. If you think it's possible, you'd make a lot more money by putting your effort into developing a perpetual motion machine. Thanks in advance Art Roy Lewallen, W7EL |
#5
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Yes Richard the literature does abound with bent antennas, even yagis to
obtain a particular performance. I know that there are "curls" in fields and waves analysis but I view travering a circle at a constantspeed as generation of a force vector as in centrifugal force which I probably falsly have placed in the radiation category. If I am incorrect I need to understand why so that I can rebuild my thought processes. Modelling the antenna shows insights that i had not realised before causing me to make an actual antenna for follow up. Regards Art "Richard Clark" wrote in message ... On Mon, 16 Aug 2004 18:05:41 GMT, " wrote: verification of my assumption that extra radiation becomes available. Hi Art, Extra? From where? What is the source? If it is the same source, then it is not Extra, but simply managed to fit a need. In this sense you still have to balance the budget of what you got, and what you radiate and what you lose (to heat). The budget does not allow Extras. The budget does however allow you to transfer balances as long as you maintain the same total. In this sense, it is like stacking elements with the correct phase relationships to move radiation that would have gone to the clouds, towards the horizon. You are still radiating the same power, but the relationship change has netted more of it going in a direction more suitable to your needs. Now, as to the matter of bends in the antenna doing this; then the literature is rich in examples to this matter. The Franklin antenna comes to mind. It has lots of bends specifically tailored to create this budget shift. It has been around for 70 or 80 years? 73's Richard Clark, KB7QHC |
#7
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wrote:
With respect to radiation I revolve solidly about accedleratio during a point in time, accelleration required to negotiat a turn which even at constant speed create acceleration You really *are* related to Stanley Unwin, aren't you? -- 73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek |
#8
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On Mon, 16 Aug 2004 20:31:03 GMT, "
wrote: If I am incorrect I need to understand why Hi Art, Because "Extra" in the budget does not balance. If you get more power OUT because it is going in a circle, then you FIRST have to put more power IN to get into that same circle. There is no extra left. 73's Richard Clark, KB7QHC |
#9
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Richard I need more explanation than that because power is somewhat
irrelevant. Radiation in my mind (and I must be now worst off than I really thougt) is accelleration and decelleration of current which is certainly not power which in my mind is Isquared R. Thus if voltage is increased current decreases and therefore radiation decreases.( see effects of very close coupling of a parallel circuit) I really do not know where you are coming from, it seems so glib! This is not meant in a demeaning way, I just don't want to mix apples with oranges at this point in time. . Current through a member travels at a constant speed but with cyclic variations in radiation. Travel in a circle is also at constant speed but with a CONSTANT radiation per unit length. Where exactly is the error in my logic? I suspect it has to do with relative phase angles but I need it explained in every day language regards Art "Richard Clark" wrote in message news ![]() On Mon, 16 Aug 2004 20:31:03 GMT, " wrote: If I am incorrect I need to understand why Hi Art, Because "Extra" in the budget does not balance. If you get more power OUT because it is going in a circle, then you FIRST have to put more power IN to get into that same circle. There is no extra left. 73's Richard Clark, KB7QHC |
#10
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You mean in the way I cripple the english language?
I guess I could be Regards Art "Ian White, G3SEK" wrote in message ... wrote: With respect to radiation I revolve solidly about accedleratio during a point in time, accelleration required to negotiat a turn which even at constant speed create acceleration You really *are* related to Stanley Unwin, aren't you? -- 73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek |
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