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the calibration of ADL5380 

Question asked by XJLee on Jan 25, 2018

I have seen an article whose name is CN0374 that describes the use of ADL5380   .I have two questions about ADL5380. For the first picture, what does the cosƟ and sinƟ mean?   how to obtain the parameter of cosƟ and sinƟ. For the second picture, how to measure the average measured phase shift error?  the cosƟtarget or sinƟtarget is  represent the  parameter of  cosƟ and sinƟ in picture one   or not . if not, how to get the  parameter of cosƟtarget and sinƟtarget?