SATELLITE-BASED EMISSION AND RECEPTION DEVICE WITH HIGH MULTI-PATH ATTENUATION RATE, REPEATER AND SATELLITE EQUIPPED WITH SUCH DEVICE Russian patent published in 2018 - IPC H04B1/38 

FIELD: electrical communication equipment.

SUBSTANCE: invention relates to satellite communications. Satellite-based emission and reception device, intended to receive and process radiofrequency signals (40) originating from an uplink, and then to emit the processed signals on a downlink towards terrestrial users, comprises a power divider (45), two independent frequency converters (20, 30) and two input demultiplexers (51, 52) connected respectively at the output of the two corresponding frequency converters (20, 30), each frequency converter (20, 30) being controlled by a dedicated local oscillator (22, 32), said two local oscillators (22, 32) operating at one frequency, said two input demultiplexers (51, 52) comprising channel filters operating in different, disjoint frequency sub-bands (F1, F2, F3, F4) spaced apart in frequency, two adjacent frequency sub-bands (F1, F2) (F3, F4) being filtered by two channel filters belonging to different input demultiplexers (51, 52).

EFFECT: technical result is minimisation of the guard band between the frequency bands allocated for the two adjacent channels.

4 cl, 4 dwg