Re: LMS RX PLL questions

Hi Ricardas,

Thanks for the quick answer. A couple of followup questions :

You should see 2xLO, 4xLO ... as well.

Oh really ? Mmm, I couldn't see those. I guess they're much lower than the odd harmonics and were buried in the noise floor.

On the TX side these can be reduced by RF filter/duplexer. RX LPF will filter them out on the RX side.

Yes, I know how to get rid of them. Unfortunately designing a front end that can programmably filter those for the whole range of the LMS (like in a broadband SDR), it's not easy :p

So I was wondering if you had any data on the typical / worst case values for those so I can know exactly how good a pre-filtering I need to have on the input.

Cheers,

Sylvain