Eric A. Cottrell wrote: > Matt Ettus wrote: > >> Bandwidth: >> When Maxim states that their maximum LPF bandwidth is 33 MHz, they >> mean one-sided bandwidth (i.e. 0 to 33 MHz). Since it is used in a >> direct conversion IQ system, that actually gives a 66 MHz bandwidth (-33 >> MHz to +33 MHz). Since that is beyond nyquist for our ADC, I spec to 60 >> MHz (+/- 30 MHz). >> >> On the low end, they specify 4 MHz, which is really 8 MHz (+/-4 MHz) >> of RF bandwidth. The filter is actually capable of going to a much >> narrow frequency, but it is outside of Maxim's specs, since nobody in >> the small satellite dish market cares about less than 8 MHz of BW. So I >> spec that it goes down to 1 MHz wide. It should be noted that when you >> go below 4 MHz wide (2 MHz in Maxim-speak) that your noise floor will >> rise a bit and phase noise may also rise. >> >> Matt >> > Hello, > > I assume the parameter for the setbw function is the double-sided > bandwidth and not Maxim-speak? >
Actually, it is in Maxim-speak... Should probably be changed. Matt _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
