Am just looking at the data sheet for the ADC's now and noticed the on chip
Hilbert filter...
Cheers
From: Matt Ettus <[EMAIL PROTECTED]>
To: paul munro <[EMAIL PROTECTED]>
CC: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] I&Q Sampling
Date: Tue, 29 Aug 2006 14:11:42 -0700
paul munro wrote:
How does the USRP do its quadrature sampling??
There seems to be many differing methods of achieving this. Some
suggest the the ADC's are off set by 90 deg,
There are 2 ADCs, one samples the I channel, one samples the Q channel.
The
others that the samples are multiplied by a series of 0,1,0.-1 and
1,0,-1,0 (which seems a waste of samples).
This is a way of using one adc to sample a real bandpass signal and then
translate it to complex baseband.
Matt
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