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On 17 Jun, 16:13, "Mike Kaliski" wrote:
"John Smith I" wrote in ... Actually, old news from 3 years ago ... http://www.eetimes.com/showArticle.j...cleID=21600147 JS The guy doesn't even seem to realise that height is one of the prime factors in optimising propogation, particularly at medium wave frequencies and vhf. Building a tall mast costs plenty of money and if commercial radio stations could broadcast efficiently from an antenna the size of a bean can, they would have done it years ago. This is surely just a couple of coils wound in opposite directions with capacitive coupling and a capacity top hat to prevent coronal discharge and maximise current in the top half of the antenna. Basically a form of top loaded, inductively wound whip antenna tapped somewhere up from the base in order to pick up a 50 ohm matching impedence at the design frequency. I don't see any new or innovative principles at work here. Now if he could make it work efficiently on all frequencies with 50 ohms impedence and with no requirement for further matching or adjustment of any sort, I would be impressed. :-) Mike G0ULI Mike The antenna is based on confirmed scientific findings of the masters and can be proved mathematically as one would expect from such an antenna. It is true that what happens to radiation when it is formed is important but what is more important is to understand radiation in its formative stage. When this is understood then miniturisation comes to the fore that may well be more important than the TOA but then even this antenna can be raised in height. There is a lesson to be learned here. The Yagi was invented by the Japanese in the early 1920 where America embraced the invention and where Japan did not. That same invention proved to be one of Japans undoing as they never caught on to the importance possibly by beurocracy. This new antenna has been pushed aside by America where I am positive other Countries are moving fast ahead and now have 3 years lead to play with. It is America this time that is complacent. The antenna is there, the mathematics is there and Maxwells laws are still there, all of which conform with each other both with this antenna and my Gaussian antenna but who cares. Art Unwin KB9MZ.......XG |
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