miniature antennas

[jw]

Hi,

I have little knowledge about antennas, so I need some direction.

I am needing to find tiny sized antennas for sale.

Can anyone direct me to companies that sell such items for say AM and FM
bands, or maybe in the 1-2 GHz range.

This is for a very low power, very short range application.

I searched for this and found some loop type antennas, but I these are too
big. It seems there must be some nicer smaller antennas available now. I
have found descriptions of the dime types also, but are these in production?

thx, jw

 

[Clarence]

"jw" <letron_2000no__spam@yahoo.com> wrote in message
news:UMo5d.20065$QJ3.18536@newssvr21.news.prodigy.com...

Hi,

I have little knowledge about antennas, so I need some direction.

I am needing to find tiny sized antennas for sale.

Can anyone direct me to companies that sell such items for say AM and FM
bands, or maybe in the 1-2 GHz range.

This is for a very low power, very short range application.

I searched for this and found some loop type antennas, but I these are too
big. It seems there must be some nicer smaller antennas available now. I
have found descriptions of the dime types also, but are these in production?

thx, jw

How small did you want?

Normal simple antenna.

Piece of wire, length = 234/Frequency in MHZ (meters) Over a ground or
counterpoise. (Very good but not practical for AM Broadcast band.)

234 / 1000 MHZ = 234mm
234 / 2000 MHZ = 117mm

Make the ground at least 10% larger.

The Dipole can be bent. It does not have to be perfectly straight.

 

[John Popelish]

jw wrote:

Hi,

I have little knowledge about antennas, so I need some direction.

I am needing to find tiny sized antennas for sale.

Can anyone direct me to companies that sell such items for say AM and FM
bands, or maybe in the 1-2 GHz range.

This is for a very low power, very short range application.

I searched for this and found some loop type antennas, but I these are too
big. It seems there must be some nicer smaller antennas available now. I
have found descriptions of the dime types also, but are these in production?

thx, jw

Have you looked into printed circuit antennas?
http://www.mwrf.com/Articles/ArticleID/5511/5511.html

--
John Popelish

 

[jw]

I'm looking for something really tiny - 5mm square would be nice. It looks
like the dime-type antenna could be this small.

I forgot to mention, this is for a transmit only application, no reception
required.

TIA, jw