Ok, I will try with an attenuator, but I suppose I can work too(while I get an attenuator) with two antennas setting the proper gain for each one, but now I have the next question: Independently if I work with attenuator or antennas, why the gain affects the spectrum and shape of the received signal? Thanks.
on 2013-01-07 18:42
on 2013-01-07 19:01
> Ok, I will try with an attenuator, but Isuppose I can work too(while I > getan attenuator)with two antennassetting the proper gain for each > one, but now I have the nextquestion: Independently if Iwork with > attenuator or antennas,whythe gain affects the spectrumand shape of > the received signal? > > Thanks. > Without seeing the details, I can't comment in detail. But as you increase the RX gain, more of the weaker components of the signal start to rise above the noise floor of your configuration, so you can see them. As you increase gain further, depending on the strength of the TX signal, you end up with the amplifier operating in a non-linear fashion, thus distorting the signal.