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From: Jon Slaughter on 3 Nov 2009 10:25
Are pretty much all modern transceiver IC's the same as far as the circuit?
All the ones I have looked at recently use a crystal and some passives for
the antenna which I assume are for impedance/resonance matching?

Obviously the IC capabilities are different and the impedance matching
techniques are too but basically it seems pretty simple circuit wise?
Hardest part being the antenna(After all, thats really all there is).

So, for the most part I can be pretty ignorant about all the special
transmission techniques and concepts(QAM, SSB, ISM, etc...) and still do
wireless very easy using these IC's? As long as I get the antenna
approximately right and hook up a uC/P then I should be able to do some
wireless(may be degraded but...)? Seems like it from what I've read in the
datasheets.

Guess I'm just supprised that it would be that easy but I suppose the IC
pretty much takes care of everything? (as far as just bit banging is
concerned)


From: Charles on 3 Nov 2009 19:14

"Jon Slaughter" <Jon_Slaughter(a)Hotmail.com> wrote in message
news:hcpi1u$638$1(a)news.eternal-september.org...
> Are pretty much all modern transceiver IC's the same as far as the
> circuit? All the ones I have looked at recently use a crystal and some
> passives for the antenna which I assume are for impedance/resonance
> matching?
>
> Obviously the IC capabilities are different and the impedance matching
> techniques are too but basically it seems pretty simple circuit wise?
> Hardest part being the antenna(After all, thats really all there is).
>
> So, for the most part I can be pretty ignorant about all the special
> transmission techniques and concepts(QAM, SSB, ISM, etc...) and still do
> wireless very easy using these IC's? As long as I get the antenna
> approximately right and hook up a uC/P then I should be able to do some
> wireless(may be degraded but...)? Seems like it from what I've read in the
> datasheets.
>
> Guess I'm just supprised that it would be that easy but I suppose the IC
> pretty much takes care of everything? (as far as just bit banging is
> concerned)

http://www.analog.com/en/press-release/9_21_09_ADI_Delivers_Breakthrough_Radio_Frequency/press.html

And others. The RF IC, which was once a dream, is now here and making
advances that were once limited to digital ICs.

The antenna is often a PCB design, such as a patch device.
http://en.wikipedia.org/wiki/Patch_antenna

It's never that easy. RF is still magic. RF is still heavily regulated.


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