Patent ID: 8824986

Claim:
A multichannel radio-frequency receiver comprising: a radio-frequency analog stage, configured to receive an input of a radio frequency electrical signal from a receiving device, the radio-frequency analog stage comprising a signal divider configured to split said electrical signal of one frequency into at least a first sub-signal and a second sub-signal having the same frequency as said electrical signal according to a pre-established division ratio and to pass at least the first sub-signal and the second sub-signal to at least a first channel and a second channel, wherein the pre-established division ratio causes the first sub-signal and the second sub-signal to have different signal strengths; and a lower-frequency stage connected downstream from the radio-frequency analog stage, comprising: mixers to convert the radio-frequency of the at least first sub-signal and the second sub-signal into lower frequencies; analog to digital converters each having a respective dynamic range to digitize at least the first sub-signal and the second sub-signal; evaluation circuits for determining the phase and amplitude of at least the first sub-signal and the second sub-signal; and a selection device configured to measure the phase and/or amplitude difference between at least first sub-signal and second sub-signal in order to correct the measured values of the phase and amplitude of the respective sub-signal on the basis of the phase and/or amplitude difference ascertained, and to employ the corrected measured values of each sub-signal to select a sub-signal from at least the first sub-signal and the second sub-signal for further processing based on determining which channel outputs the sub-signal with a signal strength closest to, without exceeding, a maximum of the respective dynamic range of that channel's analog to digital converter, the signal strength being dependent on the pre-established division ratio.