On Sun, Jul 22, 2012 at 12:59 AM, Alexander Chemeris alexander.chemeris@gmail.com wrote:
On Sun, Jul 22, 2012 at 6:40 AM, Thomas Tsou thomastsou@gmail.com wrote:
On Sat, Jul 21, 2012 at 5:57 PM, Alexander Chemeris alexander.chemeris@gmail.com wrote:
I've started documenting this at the wiki: http://code.google.com/p/umtrx/wiki/LMS6002DCalibration#Tx_I/Q_balance_calib... Is that a good enough description for you?
Added:
- IQ balance correction
- Laurent C1 pulse
We are below the target threshold.
Great achievement! Is it consistent over the whole 900 band, i.e. is that the worst case?
Overall measurements are close (either above or below) to 1.5/5 for the 900 band in general. 945 MHz is currently the best case, but that is the frequency I spent the most time on with calibration. Do we need to be consistently below 1.5/5 or just close?
I guess in 1800 band we're above the threshold yet. Could you measure by how much we're off there?
At 1945 MHz,the best I could do was roughly 2.3/7.2 with IQ balance and LO leakage corrections. I didn't try any 1800 band frequencies.
Thomas