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Real time proof of Poyntings vector
Good luck with the project anyway, it makes for an entertaining and
enlightening read. Mike G0ULI You find this entertaining? You must be into self flagellation and masochism too. What part was enlightening? W4ZCB |
Real time proof of Poyntings vector
On 7 Jun, 07:59, "Mike Kaliski" wrote:
What you are proposing is a planar gaussian antenna which flattens the cone into more of a fan shape, displays a flat impedence over a wide bandwidth and requires around ten elements of different lengths mounted on a boom support. Incorrect. It is a cluster of elements in equilibrium where all elements are resonant as is the array in its entirety. I t all ha sbeen well defined in past postings on Gaussian antennas I could be wrong, but I believe that you have reinvented the log periodic antenna. Yes you are wrong Art Thank you for your courteous response. I thought I had to be missing something. It was of course the fact that the cluster of elements and the array were all in equilibrium and resonant in their entirety. That's the bit that is obviously causing people problems and upsetting them although I must confess I don't quite understand the advantages over existing designs. The antenna is obviously directional and exhibits gain but apparently not at levels that would render existing antennae obsolete. Good luck with the project anyway, it makes for an entertaining and enlightening read. Mike G0ULI- Hide quoted text - - Show quoted text - |
Real time proof of Poyntings vector
On 7 Jun, 07:59, "Mike Kaliski" wrote:
What you are proposing is a planar gaussian antenna which flattens the cone into more of a fan shape, displays a flat impedence over a wide bandwidth and requires around ten elements of different lengths mounted on a boom support. Incorrect. It is a cluster of elements in equilibrium where all elements are resonant as is the array in its entirety. I t all ha sbeen well defined in past postings on Gaussian antennas I could be wrong, but I believe that you have reinvented the log periodic antenna. Yes you are wrong Art Thank you for your courteous response. I thought I had to be missing something. It was of course the fact that the cluster of elements and the array were all in equilibrium and resonant in their entirety. That's the bit that is obviously causing people problems and upsetting them Yes, that is about it, you could also match that same definition to Poyntings vector but even that comes under fire. There was also a mathematical anylysis made by an individual contributor connecting Gauss but that got hammered also. But lets face it they are amateurs by definition. although I must confess I don't quite understand the advantages over existing designs. The antenna is obviously directional and exhibits gain but apparently not at levels that would render existing antennae obsolete. Certainly not, it achieves things other than focussing for gain which is primarily the intent of the yagi. If the yagi satisfies all then there would not be a need for other types of antennas or multi books on the subject. Amateurs concentrate on the word gain to the exclusion of consideration of other attributes. The antenna trade magazine feels that the biggest needed advancement is to get drivers to handle impedances lower than 5 ohm. Weather people are striving for minimum cross polarisation. Wi fi is striving for maximum uniform coverage. Gauss's and Green's functions are being utilised to have multi channel operation at the same time using what is termed a Gaussian antenna so named becaus of iterations used before transmission. Thus many things are sought after in todays world besides the almighty gain. It is unfortunate that the amateur community refuses the introduction of antennas based on Gaussian law as well as Poynting's vector but the fact is that as amatures they cannot be expected to understand the underpinnings of radiation or to visualise a cluster of elements that some would consider it as an individual mass. The very idea that a single point of energy supply can evoke the emmission of flux from multi radiators that are randomly arranged and in equilibrium without reflectors or directors is completely beyond their ken and thus want to see it as a bolloxed Yagi. I see advancement as the provision of something new that may or may not provide a clue for major advantage even tho each clue may not necessarily on its own be outstanding. By adding the unit of time to both sides of the gaussian equation for statics I have provided a correllation to Poyntings vector and a antenna array that follows that hypothesis. Existing mathematics and computor programs confirm this aproach but amateurs have been seething with anger at the idea of some thing new as you can see by the comments. Fortunatly there are some scholars around outside the amateur community who have verified independently what I have produced and the days have gone over this side of the pond that used to flourish in past glory days of ham radio. Good luck with the project anyway, it makes for an entertaining and enlightening read. Yes it has been entertaining for some who relish the idea of slander and insulting behaviour which is what this newsgroup is famous for. Basically that is what all things are about now on this side of the pond ": You are either with us or against us" is now the mantra of the day. Cheers and beers from an old East Ender Art Mike G0ULI- Hide quoted text - - Show quoted text - |
Real time proof of Poyntings vector
Mike Kaliski wrote:
"Gausian statistics refer to the distribution of typically, power over a given area or range. Generally more power is concentrated at the centre of a range with power falling symmetrically either side of a central high point." Art replied: "Correct, very nuch like a band pass filter." In a band pass filter we are interested in frequency response. Mike was speaking of beam forming. There is a difference between beam width and bandwidth. I am still trying to decipher Art`s "Gausian antenna". It would help me if Art didn`t muddle topics. Best regards, Richard Harrison, KB5WZI |
Real time proof of Poyntings vector
Art wrote:
"But let`s face it, they are amateurs by definition." Kraus was an amateur, not to be disparaged!. W8JK. Best regards, Richard Harrison, KB5WZI |
Real time proof of Poyntings vector
On Thu, 7 Jun 2007 15:59:13 +0100, "Mike Kaliski"
wrote: It was of course the fact that the cluster of elements and the array were all in equilibrium and resonant in their entirety. Hi Mike, Anticipating that Arthur will use you as a authoritative reference, what do you mean by equilibrium? 73's Richard Clark, KB7QHC |
Real time proof of Poyntings vector
"Richard Harrison" wrote in message ... Art wrote: "But let`s face it, they are amateurs by definition." Kraus was an amateur, not to be disparaged!. W8JK. Best regards, Richard Harrison, KB5WZI And Art is no Professional. If Art had been a professional he would have made a comparison with his antenna and a typical Yagi. That way he could demonstrate which is the better. He would have posted design information, he would have met honest questions with honest answers instead of telling his peers they are thick headed and have no insight becuse they will not follow his lead like Lemmings. Jimmie |
Real time proof of Poyntings vector
Thank you for your courteous response. I thought I had to be missing
something. It was of course the fact that the cluster of elements and the array were all in equilibrium and resonant in their entirety. That's the bit that is obviously causing people problems and upsetting them Yes, that is about it, you could also match that same definition to Poyntings vector but even that comes under fire. There was also a mathematical anylysis made by an individual contributor connecting Gauss but that got hammered also. But lets face it they are amateurs by definition. snip Art I now know what you are trying to achieve and why. I was initially thinking purely in terms of amateur band HF frequencies rather than the higher end of the spectrum, where this antenna makes sense. Obviously as frequencies increase, the properties of electromagnetic waves change in the way they interact with materials. I still doubt whether any new physical theories are needed to explain what is happening and doubtless careful analysis in the future will reveal how it all works. As you suggest, spread spectrum, multi channel communications are becoming more and more essential in order to efficiently utilise the limited spectrum available and antenna designs like yours will help to minimise unnecessary interference to other users while preserving a high quality link. Harold Arts' postings have prompted me to investigate some areas for myself with which I was unfamiliar. While I don't subscribe to needing to find some new physical theory to explain how these antennae work, there are some interesting ideas being developed in the GHz frequency ranges. My previous professional experience revolved around radar (sorry about the pun). I haven't really been paying too much attention to the way in which wi-fi and other high frequency signalling systems worked, even though they were in similar frequency bands. I have learned something new and see some humour in posts on this subject. Hence entertaining and enlightening - not sadism or masochism. Cheers Mike G0ULI |
Real time proof of Poyntings vector
"Richard Clark" wrote in message ... On Thu, 7 Jun 2007 15:59:13 +0100, "Mike Kaliski" wrote: It was of course the fact that the cluster of elements and the array were all in equilibrium and resonant in their entirety. Hi Mike, Anticipating that Arthur will use you as a authoritative reference, what do you mean by equilibrium? 73's Richard Clark, KB7QHC Richard, I am not certain that I have got it all completely straight in my head, but I have taken it to mean that all the elements making up the array and the array itself are designed to be resonant about a particular frequency. As this type of antenna is intended for use with spread spectrum communications, control over directivity is probably more of a consideration than gain. At the multi GHz frequencies I believe these antennas will be operating, they probably won't have any direct correlation to HF amateur band techniques. The propogation properties of electromagnetic waves change as frequency increases, so I believe that there is no hidden method behind how these antennas might work, merely at best, an as yet unrecognised mode of propogation. Arts' postings have prompted me to do a little research into GHz frequency techniques which is an area where I had virtually no knowledge apart from installing commercial radar waveguide and making sure it was matched to the scanner. I would hate to think I was an authoritative reference in this field :-/ Cheers Mike G0ULI |
Real time proof of Poyntings vector
"Mike Kaliski" wrote in message ... Thank you for your courteous response. I thought I had to be missing something. It was of course the fact that the cluster of elements and the array were all in equilibrium and resonant in their entirety. That's the bit that is obviously causing people problems and upsetting them Yes, that is about it, you could also match that same definition to Poyntings vector but even that comes under fire. There was also a mathematical anylysis made by an individual contributor connecting Gauss but that got hammered also. But lets face it they are amateurs by definition. snip Art I now know what you are trying to achieve and why. I was initially thinking purely in terms of amateur band HF frequencies rather than the higher end of the spectrum, where this antenna makes sense. Obviously as frequencies increase, the properties of electromagnetic waves change in the way they interact with materials. I still doubt whether any new physical theories are needed to explain what is happening and doubtless careful analysis in the future will reveal how it all works. As you suggest, spread spectrum, multi channel communications are becoming more and more essential in order to efficiently utilise the limited spectrum available and antenna designs like yours will help to minimise unnecessary interference to other users while preserving a high quality link. Harold Arts' postings have prompted me to investigate some areas for myself with which I was unfamiliar. While I don't subscribe to needing to find some new physical theory to explain how these antennae work, there are some interesting ideas being developed in the GHz frequency ranges. My previous professional experience revolved around radar (sorry about the pun). I haven't really been paying too much attention to the way in which wi-fi and other high frequency signalling systems worked, even though they were in similar frequency bands. I have learned something new and see some humour in posts on this subject. Hence entertaining and enlightening - not sadism or masochism. Cheers Mike G0ULI I have learned quite a bit from those who have rreplied to Art. Jimmie |
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