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#1
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He was saying that his patent was about to be issued, he also mentioned
something about a fractal top. At that point I QSYed. "Dave Platt" wrote in message ... I'm having a hard time seeing the "minimal reactance" part of this design. Looking at the plot of S11 it looks pretty much like any other antenna with a single resonance. It has "minimal" reactance at resonance and is highly reactive elsewhere. It looks to me as if this is a member of the "Super C" antenna... short, relatively low radiation resistance, and a lot of top-loading capacitance. There's an article or two in one of the early ARRL Antenna Compendium collections (#1 or #2) which analyzes the "Super C" approach, compared to a short vertical with a more traditional capacity hat made of straight wires. The analysis seemed to add up to "Probably not worth the trouble and money", as a similar efficiency can be achieved more easily and less expensively with the traditional approach. There's a *lot* of metal in the MRA, and at the price of aluminum this month I doubt it's a project I'd start. -- Dave Platt AE6EO Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
#2
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Fred W4JLE wrote:
He was saying that his patent was about to be issued, he also mentioned something about a fractal top. A balanced fractal top hat cannot be beat!!! :-) That's one of the things that fractals are good at. -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
#3
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Yes Cecil! Quite in vogue in manly hatwear!!! (hat-ware too!) grin
Regards, John "Cecil Moore" wrote in message ... Fred W4JLE wrote: He was saying that his patent was about to be issued, he also mentioned something about a fractal top. A balanced fractal top hat cannot be beat!!! :-) That's one of the things that fractals are good at. -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
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