I think we can seperate them by choosing an appropriate sampling frequency. However i don't know how to figure out the frequency.I don't really see how you can simultaneously sample all bands with a single sampler. :???: How would you keep the signals separate after they are sampled?
"I think we can separate them" is not a valid engineering approach, no matter how high the sampling frequency. Specify how you would do that first, otherwise it makes little sense to discuss the sampling rate.I think we can seperate them by choosing an appropriate sampling frequency. However i don't know how to figure out the frequency.
Okay, sorry i am posting this from my phone and cannot attach my reference."I think we can separate them" is not a valid engineering approach, no matter how high the sampling frequency. Specify how you would do that first, otherwise it makes little sense to discuss the sampling rate.
Yes. That's the general answer. In addition, the bands are already overlapping. So they can be only separated if special modulation features allow it.Highest fc is 188.33MHz. To analise you mix you have to use samling rate 188.33 MHz x 2 = 376.66 MHz or greater.
And could you help me to choose ADC specification such as sampling frequency? For example, with fc=168.33MHz and BW=20MHz how can I know if one ADC is appropriate for this?
There are many sampling technique such as nyquist sampling rate, oversampling, undersampling,... what should I choose?
What kind of ADC architectures is appropriate for this?
And can I use the ADC in the paper: A 42 mW 2 GS/s 4-bit flash ADC in 0.18-μm CMOS to sample the signal above?
(I want to use 4 bit ADC instead 8 bit's)
Yes. As a prerequisite, these undersampling schemes usually involve I/Q sampling, so no in-band component get's lost, independent of it's phase. But undersampling requires filters to prevent aliasing of off-band components.I accept that oversampling does reduce the noise floor (discontinuity) but even proper selection of sampling frequency in undersampling case can yield lesser discontinuity between sample to sample as done in general bandpass sampling. Correct me if I'm wrong.
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