Ian Larsen wrote:
> I have a conceptual question about the USRP. Why are there 4 A/D
> converters? Is it only for flexibility reasons, or can you acheive
> double the sampling rate by clocking two of them 180 degrees of from
> each other and interleaving the resulting data?
Neither.
Each daughterboard receiver does complex analog downconversion and
produces two resulting baseband signals, the in-phase (I) and quadrature
(Q) outputs. Each of these is sampled by a separate ADC, and with up to
two receiver boards, this requires all four ADCs present.
--
Johnathan Corgan
Corgan Enterprises LLC
http://corganenterprises.com