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resources:eval:user-guides:ad-fmcomms1-ebz:iq_correction [29 Jun 2015 11:15] – [Math of I/Q Correction] Add missing negative sign for the tan() Lars-Peter Clausenresources:eval:user-guides:ad-fmcomms1-ebz:iq_correction [21 Jan 2022 01:42] (current) – update links Robin Getz
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 ===== Math of I/Q Correction ===== ===== Math of I/Q Correction =====
-We will use the algorithm introduced in S.W. Ellingson's paper Correcting I-Q Imbalance in Direct Conversion Receivers (([[http://www.ece.vt.edu/swe/argus/iqbal.pdf|S.W. Ellingson's paper]])) to conduct the I/Q correction.+We will use the algorithm introduced in S.W. Ellingson's paper Correcting I-Q Imbalance in Direct Conversion Receivers (([[https://www.faculty.ece.vt.edu/swe/argus/iqbal.pdf|S.W. Ellingson's paper]])) to conduct the I/Q correction.
  
 Given a single tone that converts the signal from RF to baseband, ideally, the two baseband signals (in-phase and quadrature) should be orthogonal to each other with the same amplitude. Without loss of generality, we normalize the magnitude and the phase, then the two signals can be expressed as:  Given a single tone that converts the signal from RF to baseband, ideally, the two baseband signals (in-phase and quadrature) should be orthogonal to each other with the same amplitude. Without loss of generality, we normalize the magnitude and the phase, then the two signals can be expressed as: 
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 where <m>I prime(t)</m> and <m>Q prime(t)</m> are observed signals, and <m>A, C, D</m> are correction matrix parameters.</WRAP> where <m>I prime(t)</m> and <m>Q prime(t)</m> are observed signals, and <m>A, C, D</m> are correction matrix parameters.</WRAP>
  
-Please refer to the S.W. Ellingson's paper(([[http://www.ece.vt.edu/swe/argus/iqbal.pdf|S.W. Ellingson's paper]])) for the detailed procedures of finding out the correction matrix parameters. +Please refer to the S.W. Ellingson's paper(([[https://www.faculty.ece.vt.edu/swe/argus/iqbal.pdf|S.W. Ellingson's paper]])) for the detailed procedures of finding out the correction matrix parameters. 
  
  
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 <WRAP round help 80%> <WRAP round help 80%>
-  * Questions? [[http://ez.analog.com/post!input.jspa?containerType=14&container=2061|Ask Help & Support]].+  * Questions? [[ez>community/fpga|Ask Help & Support]].
 </WRAP> </WRAP>
  
resources/eval/user-guides/ad-fmcomms1-ebz/iq_correction.1435569334.txt.gz · Last modified: 29 Jun 2015 11:15 by Lars-Peter Clausen

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