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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 Clausen | resources: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' | + | We will use the algorithm introduced in S.W. Ellingson' |
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)</ | where <m>I prime(t)</ | ||
- | Please refer to the S.W. Ellingson' | + | Please refer to the S.W. Ellingson' |
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<WRAP round help 80%> | <WRAP round help 80%> | ||
- | * Questions? [[http://ez.analog.com/post!input.jspa? | + | * Questions? [[ez> |
</ | </ | ||