Other Parts Discussed in Thread: CC1200
With respect to using 200 kHz RX Bandwidth on the cc1120, it is stated on this post that:
"For the low-IF case: Just to make round numbers, say that you set the IF to 70 kHz. Then the RX BW will be centered around this frequency (as in model C). But 70 kHz -100 kHz = -30 kHz meaning that the RB filter goes into negative frequencies. Then the DC filter will remove some of the signal close to where the information is. On the other end you will have 70 kHz + 100 kHz meaning that the filter ends at 170 kHz. At this point the quantization noise from the ADC has started to increase meaning that you have to have a fairly strong signal to avoid this part of the signal to be buried in noise."
In this case I understand why the lower side of the signal would be filtered by the high pass dc filter. But why does the upper end of the signal begin to be dominated by quantization noise?
