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pcb trace 433mhz antenna
I expect antennas shown are for connecting to a 50Ohm soyrce. Are u using a module or a chip? What is part number?
The type approved thing just means they have not tested for ISM band requirements.
If your source is 50Ohm, you want your antenna Zo 50Ohm. If you...
trace as antenna
make the track 1.5mm wide and 173mm long. Place it at the edge of the PCB and go around the corner if you need to. Keep other stuff 15mm away if possible. This should give you a return loss of about -8dB. Wont be a great antenna but will work fine at short range. I'd guess...
what is avr
I would use neither.
Have you checked out Zilog. Good 8 bit range XP,Encore and Accclaim(with an ethernet mac), Dev tools are Free. Dev kits available for all at low price.
Dont ingnore fact that ARM7 based micros are now <$5 . Check out Atmels SAM7 range or Philips LPC21XX. You...
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