A mobile communication satellite multi-beam payload front-end architecture
A communication satellite and multi-beam technology, which is applied in the field of geostationary mobile communication satellite payload, can solve the problems of large output power difference, waste of satellite resources, long radio frequency cable size, etc., and achieve the effect of weight reduction and low loss
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[0100] Such as figure 2 with Figure 4 As shown, the system has 109 beams for receiving and transmitting, and 64 feed sources can be shared by transmitting and receiving through duplexers.
[0101] After optimizing the excitation coefficients of each beam and completing the layout of the duplexer and feed array in the satellite communication cabin, the Beam i , i=1, 2, ... 109 and L 0 ;
[0102] The above genetic algorithm is implemented by programming, and the actual switching network obtained is as follows: figure 2 As shown, the design value of the ratio of the output power of 109 beams to the total power of 64 solid-state power amplifiers in the system is as follows Figure 4 As shown, the test values are as Figure 5 As shown, the horizontal axis represents the beam number, and the vertical axis represents the ratio of the output power of each beam working alone to the system output power.
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