Thank you, that's very helpful. I assume this also true for the BasicRX daughterboard? (Doesn't do downconversion, but does do analog multiplication to get I and Q?)
-Ian On 7/18/07, Johnathan Corgan <[EMAIL PROTECTED]> wrote:
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
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