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? 73 Eric _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
