N2EY wrote:
In article , "Jim Hampton"
writes:
"N2EY" wrote in message
.com...
Maybe - or maybe not.
Fact is that without more info we're not in a position to judge the
thing one way or another. Maybe it's a breakthrough, maybe it's one of
things that is great in theory but totally impractical, or maybe it's
a dud. Without more info, any judgement is just raw speculation. And
since a patent application is involved we're not going to see much
real data for a while anyway.
One point to watch for, though: What matters in practical antennas is
the performance of the entire antenna system, not just the antenna
itself. For example, a short (in terms of wavelength) whip antenna can
be quite efficient - it's the matching network and ground system
losses that reduce antenna system efficiency, and bandwidth, to low
numbers.
73 de Jim, N2EY
Hello, Jim
Greetings.
Your point about matching network and ground losses is well taken.
TNX
We keep hoping for that "perfect" antenna.
I just hope for a better one.
An IEEE publication back in 1995
pointed out that the Northern Lights are caused by ions that are far too
small to be efficient radiators of light - and yet they radiate light.
If it happens, it must be possible.
In
theory, an antenna can be vanishingly small and yet be efficient - and even
possess gain!
Sure. But try to match to it!
If any one has a 6 inch whip with a 3 dBi gain on 75 meters, let me know.
I'd like to try it first, however. Don't ask for money up front like all of
the notes I receive about transferring $10,000,000.00 US for which I receive
$1,000,000.00 - uh, but have to send someone some up front cash to ensure
the account is good
)
If it was easy, anybody could do it.
OTOH we don't have anything to go on other than "continuously loaded monopole".
Just what is that anyhow? a 50 ohm resistor on the end of a pole?
Maybe he's got a real advance, maybe it's all just hype. I'll reserve judgement
until there's some real info available.
Extraordinary claims require extraordinary proof. I'll not only reserve
judgment, but am highly skeptical about it at the same time. This sort
of thing is almost like the audiophile stuff I posted the other day.
And what I have seen so far on this breakthrough is feelgood stuff. I
just wonder why an 80 to 100 percent efficient antenna melts when hit
with a "whopping" 100 watts of power?
If somebody told you, back about 1975, that in 25 years you'd have a computer
on your desk that had a 500 MHz CPU, over 100 MB of memory and 10 GB of disk
space, and cost about $200 complete (1975 dollars) what would you have said?
First I would have said "kewl" or whatever I was saying in 1975.
(probably more like "Far out, Dude!")
I wouldn't have seen any mechanical limitations however. I would have
marveled at getting so much stuff on one integrated circuit, noting that
the size was limited by the limitations of light. I don't think I would
have thought of X-ray lithography at the time. But I would have believed
that such a thing could be done.
The areas that I would be most surprised at would be that the computer
would have a single CPU that did all the processing. I would wonder why
on earth we weren't using massively parallel processing. In fact, I
still do. Love my G5 dual processor!
The most mind boggling thing to me would have been the software and
applications for the computer of 2000 or 2004. Soundcard applications,
GUI's, graphics and all that other stuff was simply not on my radar
screen at that point.
- Mike KB3EIA -