It is known from published papers that the coaxial cable and antenna system of an FM stereo station often reduce stereo channel separation, deteriorating the quality of the emitted sound. This problem is motivated by impedance mismatch errors caused by the characteristics of the radiating dipoles. In this work, amathematical analysis of this problem will be performed using SPICE simulation to identify its origins. Based on the results of this analysis, the solution that has been developed based on the design of a monitored audio processor will be presented. This technology allows achieving high channel separation using the existing antenna and adds the capability to remotely measure, adjust, and certify the quality of the emitted sound.
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