zamonaviy aloqa kabellari
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mundarija: kirish. zamonaviy aloqa kabellarining ahamiyati……………………………..2 1-bob. zamonaviy aloqa kabellarining turlari va o‘tkazuvchanlik qobiliyati…………………………………………..3 1.1. koaksial kabellar va optik tolali kabellar…………………………………….3 1.2. o‘tkazuvchanlik va signal sifati o‘rtasidagi aloqalar…………………………7 2-bob. signal sifati va uning o‘lchovlari………………………..10 2.1. signal susayishi va shovqin………………………………………………….10 2.2. yoritilgan signal va zaiflashish………………………………………………10 2.3. tashqi elektromagnit interferensiyalar……………………………………….11 3-bob. zamonaviy aloqa kabellarida signalni yaxshilash usullari va istiqbollari……………………………………………..…11 3.1. optik tolali kabellar va ularning afzalliklari…………………………………11 3.2. yangi texnologiyalar va kelajak istiqbollari…………………………………12 xulosa. ………………………………………………………………………...
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