On Fri, 29 Jan 2010 17:05:26 -0800 (PST), Roger
wrote:

NIST engineers are working with scientists from the University of
Arizona (Tucson) and Boeing Research & Technology (Seattle, Wash.) to
design antennas incorporating metamaterials — materials engineered
with novel, often microscopic, structures to produce unusual
properties. The new antennas radiate as much as 95 percent of an input
radio signal and yet defy normal design parameters. Standard antennas
need to be at least half the size of the signal wavelength to operate
efficiently; at 300 MHz, for instance, an antenna would need to be
half a meter long. The experimental antennas are as small as one-
fiftieth of a wavelength and could shrink further.

Fact or Fiction?


Crack your cellphone and look at the antenna there.
Open your Bluetooth dongle.

Then calculate the lamda in air.


So what.
Ever heard about Epsilon?
http://en.wikipedia.org/wiki/Epsilon

w.

On 1/30/2010 11:24 AM, Helmut Wabnig wrote:

...
Crack your cellphone and look at the antenna there.
Open your Bluetooth dongle.

Then calculate the lamda in air.


So what.
Ever heard about Epsilon?
http://en.wikipedia.org/wiki/Epsilon

w.

Exactly. My Bluetooth Dongle (and in no way representative of my real
dongle--either in size or performance! :-) ) is about the size of my
index finger nail. I'd imagine use of a suitable magnifying glass would
allow me to appraise the antenna it contains ...

Regards,
JS

"John Smith" wrote in message
...
On 1/30/2010 11:24 AM, Helmut Wabnig wrote:

...
Crack your cellphone and look at the antenna there.
Open your Bluetooth dongle.

Then calculate the lamda in air.


So what.
Ever heard about Epsilon?
http://en.wikipedia.org/wiki/Epsilon

w.

Exactly. My Bluetooth Dongle (and in no way representative of my real
dongle--either in size or performance! :-) ) is about the size of my index
finger nail. I'd imagine use of a suitable magnifying glass would allow
me to appraise the antenna it contains ...

Regards,
JS
-
You would use a magnifying glass to examine an antenna in your dongle?

On 2/1/2010 8:41 AM, Wayne wrote:

...
-
You would use a magnifying glass to examine an antenna in your dongle?




Yanno, I knew it was a mistake when the first guy started talking about
"dongles." grin

Regards,
JS

"John Smith" wrote in message
...
On 2/1/2010 8:41 AM, Wayne wrote:

...
-
You would use a magnifying glass to examine an antenna in your dongle?




Yanno, I knew it was a mistake when the first guy started talking about
"dongles." grin

Regards,
JS
-
I knew the discussion would go downhill, so I rolled the first snowball
At one time, I used a network security password dongle at work. One of the
gals liked to use the word frequently, and would then snicker.
--Wayne
W5GIE (in W6 exile)