A Method of Using Quadrature Sampling to Measure Phase and Magnitude
نویسنده
چکیده
Introduction The purpose of this paper is to describe a method for measuring the phase and magnitude of a sinusoidal signal by using four reference square waves of the same frequency, each offset from the previous one by 90 degrees. This mechanism is easily implemented for mid-audio frequencies, such as 5 KHz. What makes it useful is that the task of doing phase and magnitude measurements of RF signals can often be reduced to doing the same at a low IF frequency such as 5 KHz.
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