This seems almost too good to be true. Keep in mind that I'm not an engineer. Maybe this technology could be used for future amateur satellites, wider bandwidth, more gain, less space, etc. http://www.fractalantennas.com/
Dave Marthouse N2AAM dmarthouse@gmail.com
I beleive fractal antennas have been "ignored" because of patent issues.
On 13-Mar-10 22:26, Dave Marthouse wrote:
This seems almost too good to be true. Keep in mind that I'm not an engineer. Maybe this technology could be used for future amateur satellites, wider bandwidth, more gain, less space, etc.http://www.fractalantennas.com/
Dave Marthouse N2AAM dmarthouse@gmail.com _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
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Dear friends,
See the article by Steven Best in the June 2003 IEEE Antennas and Propagation magazine. His analysis shows that they do not work any better than any other small antenna. I attended a presentation on his findings at an IEEE antennas society meeting and he makes a very persuasive case.
There are those who argue that his analysis is not perfectly fair (i.e. those trying to SELL these antennas) but I have yet to see any technical analysis that shows otherwise.
73, Tony AA2TX AMSAT VP Engineering
At 09:18 AM 3/14/2010, Nigel Gunn G8IFF/W8IFF wrote:
I beleive fractal antennas have been "ignored" because of patent issues.
On 13-Mar-10 22:26, Dave Marthouse wrote:
This seems almost too good to be true. Keep in mindthat I'm not an engineer. Maybe this technology could be used for future amateur satellites, wider bandwidth, more gain, less space, etc.
http://www.fractalantennas.com/
Dave Marthouse N2AAM dmarthouse@gmail.com _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.733 / Virus Database: 271.1.1/2743 - Release Date:
03/13/10 07:33:00
-- Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937 825 5032 Amateur Radio G8IFF W8IFF (was KC8NHF), e-mail nigel@ngunn.net www http://www.ngunn.net Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP Club International #385, Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK 0182, MKARS, ALC, GCARES, XWARN.
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
From memory, I believe the advantage that fractal antennas provide is very wide bandwidth and reduced size for performance. Desirable characteristics for hand-held communications. But as far as radiation efficiency???
73, Ed- KL7UW
At 07:08 AM 3/14/2010, Anthony Monteiro wrote:
Dear friends,
See the article by Steven Best in the June 2003 IEEE Antennas and Propagation magazine. His analysis shows that they do not work any better than any other small antenna. I attended a presentation on his findings at an IEEE antennas society meeting and he makes a very persuasive case.
There are those who argue that his analysis is not perfectly fair (i.e. those trying to SELL these antennas) but I have yet to see any technical analysis that shows otherwise.
73, Tony AA2TX AMSAT VP Engineering
At 09:18 AM 3/14/2010, Nigel Gunn G8IFF/W8IFF wrote:
I beleive fractal antennas have been "ignored" because of patent issues.
On 13-Mar-10 22:26, Dave Marthouse wrote:
This seems almost too good to be true. Keep in mindthat I'm not an engineer. Maybe this technology could be used for future amateur satellites, wider bandwidth, more gain, less space, etc.
http://www.fractalantennas.com/
Dave Marthouse N2AAM dmarthouse@gmail.com _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur
satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
73, Ed - KL7UW, WD2XSH/45 ====================================== BP40IQ 500 KHz - 10-GHz www.kl7uw.com 500-KHz/CW, 144-MHz EME, 1296-MHz EME DUBUS Magazine USA Rep dubususa@hotmail.com ======================================
participants (4)
-
Anthony Monteiro -
Dave Marthouse -
Edward Cole -
Nigel Gunn G8IFF/W8IFF