Method for determining imbalance in a vector signal modulator

摘要: A method of determining imbalance in a vector signal modulator. First and second channels modulator are stimulated with multi-tone having power versus frequency spectrum numerous frequencies. In response to the stimulation, an output is measured. The first simultaneously essentially same characteristics as one used when separately stimulating channels. Data collected from both separate simultaneous stimulations calculate Alternatively, two signals. signals have tones at main frequencies offsets thereto, respectively. Output measurements then made imbalances calculated.