Homebrew PCBs

On Mon, 2009-02-09 at 01:57 +0000, Brian wrote:
> I have been researching PCB Antenna's and found that they can be 
> complicated. What I would like to know.. does anyone have a genaric 
> layout for a 50 ohm 433MHz PCB antenna, if not a layout than how I 
> could do it. A tutorial would be cool too. I am using Eagle CAD. I am 
> going to try to etch it myself. I am only looking at a distance of
> less 
> than 100 ft at about 2400 baud. I made a tempreture datalogger and 
> would like to add a wireless unit for an outside temp.

I remember that integration IA4420/21 had documentation and layouts (in
pdf) of various pcb antenas for 315/433/868/915MHz,  i couldn't found
the original url now. The files are IA_ISM-AN1.pdf and IA_ISM-AN2.pdf
you can still found them, if not ask me by email. I start a design but
bought it already made and cheaper...

Simao