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- W2052704908 abstract "This paper describes the 21 GHz band Direct Broadcasting Satellite transponder for wide RF band HDTV and reduction of satellite weight. The most difficult problem with this frequency band is rain attenuation. We studied a variable output power transponder system for a contoured six-beam antenna covering all of Japan. The output power of transponders corresponding to rain areas are boosted from the normal margin of 5 dB (the worst month service time rate 95%) to 9 dB (99%). This variable output power method can decrease about 30% of the satellite power and weight." @default.
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- W2052704908 date "1995-05-01" @default.
- W2052704908 modified "2023-09-24" @default.
- W2052704908 title "Variable output power 21 GHz direct broadcasting satellite systems" @default.
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- W2052704908 doi "https://doi.org/10.1016/0094-5765(95)00019-v" @default.
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