miniature antennas

Sep 26, 2004 3 Replies

Have you looked into printed circuit antennas?

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John Popelish

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.

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

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