RECEPTION PROCESS AND RECEPTION ANTENNA SYSTEM FOR IMPLEMENTING THE PROCESS

摘要

According to a reception process for mobile reception with several individual reception antennae - also called diversity reception process - an auxiliary modulation is superimposed on the individual output signals of the antennae and the antennae output signals are added to obtain a cumulative signal which is demodulated as an amplified, selected, intermediate frequency cumulative signal in function of the value and frequency or phase. This permits the relationship between the phase of an individual signal and the phase of the cumulative signal and/or the contribution of the amplitude of an individual signal to the amplitude of the cumulative signal to be determined. This information is used to optimize the wanted signal, in particular to suppress interference, for example by modifying the phases and/or amplitudes of the individual high-frequency signals in function of the phase relationship determined and/or the amplitude contribution determined. This results in a substantially improved quality of reception in mobile systems, with minimal circuitry. Reception antennae systems for implementing the process are also described.