At this adress you'll find a two transistor fm-transmitter, along with a circuit description and the theory around it.
Smaller then this it won't get i guess :)
--- In Electronics_101@y..., "Albert van Mil" <a.mil@c...> wrote:
> Well, some 3x3 cm only.... I tried something funny yesterday:
> I turned on my scope and put a 10cm wire in the BNC bus contact.
> Then I turned on my generator and put a similar wire in the output
> contact. From some 10 kHz on, if I grab the copper of the
> wire, my body seems to act as a very good antenna and my scope
> (at half a meter distance) displays a clear signal of several tens
> hundreds of millivolt amplitude :) So, what I'm gonna try is
> this: Create a small generator with reasonable output voltage,
> the output with a strap to the body and then just make a receiver
> its simplest form: a pickup wire and an amplifier. Should work for
> at least a few meters, and that's enough.. I only need to
> a frequency and light a LED.
> Cheers Albert
> -----Original Message-----
> From: EarthWind FireWater [mailto:onthecuttingedge2005@y...]
> Sent: Tuesday, September 03, 2002 12:37 AM
> To: Electronics_101@y...
> Subject: RE: [Electronics_101] Re: Wanted: small FM receiver
> Hi Albert.
> How small in squared Centimeters do you want the
> entire FM circuit to be?
> Best of luck.