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A flexible self-test function becomes crucial in the processes of debugging, production and user site testing in modern intelligent signal generators. In this paper, a design and implementation method of self-test system in signal generators are elaborated with respect to the overall architecture, driver program, data structure, self-test node binary tree traversal algorithm and software processing...
I/Q modulation impairments compensation is an essential part of vector signal generation. In this paper, a novel compensation method based on baseband signal predistortion is proposed to broadband vector modulation. The causes of vector modulation errors via I/Q impairments are analysed numerically. Then a mathematic model of the modulation errors is given, and a compensation method is developed with...
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