On Mon, Jul 28, 2008 at 12:28 PM, yyzhuang <[EMAIL PROTECTED]> wrote:
>
> What does "combination of the LO in the front end and the digital
> downconverter" mean please?
For general radio architecture, please see:
http://en.wikipedia.org/wiki/Superheterodyne
Generally, the LO/synthesizer has some discrete step size (12.5kHz,
250kHz, etc). To get down to baseband, the resultant signal is then
shifted in frequency down using the digital downconverter:
http://en.wikipedia.org/wiki/Digital_Down_Converter
Brian
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