Patent ID: 6393258
Filing Date: 2002-05-21
Classification: H03D,H04L

Abstract:
A process for adjusting a level of spurious signal spectral lines in an output frequency spectrum provided by a single-sideband frequency mixer, the process comprising the steps of:generating two mutually phase-shifted test signals defined by a plurality of parameters, and applying the two test signals to respective first and second inputs of the single-sideband frequency mixer; measuring the level of each of the spurious signal spectral lines for different test values for the plurality of parameters of the two test signals; and determining reference values for the plurality of parameters for minimizing the level of the spurious signal spectral lines by a numerical calculation performed on a predetermined number of different test values and corresponding measured values of the levels with respect to two parabolic relations linking the levels of the spurious signal spectral lines with the plurality of parameters for reducing adjustment time by using a reduced number of test values.