Shirokopolosnye Sistemy Svyazi

Shumopodobnye signaly shiroko primenyayutsya v sovremennykh sistemakh besprovodnoy svyazi blagodarya ryadu preimushchestv - pomekhoustoychivosti, skrytnosti, vozmozhnosti kodovogo razdeleniya abonentov. Peregruzhennost' radiochastotnogo spektra privodit k raznogo roda pomekham, i, kak sledstvie, neobkhodimosti zashchity ot nikh. Naibolee opasnymi dlya vkhodnykh kaskadov shirokopolosnykh sistem svyazi (ShSS) yavlyayutsya moshchnye pomekhi s uzkim spektrom (UP). Kak pravilo, mekhanizm zashchity ot pomekh realizuetsya v promezhutochnykh kaskadakh sistemy svyazi, v to vremya kak vkhodnye kaskady priemnika ShSS ostayutsya bez nadlezhashchey zashchity. Voprosam zashchity vkhodnykh kaskadov ShSS ot moshchnykh UP posvyashcheno nastoyashchee issledovanie. Krome togo, v knige privedeny primery proektirovaniya perestraivaemykh po chastote sverkhvysokochastotnykh (SVCh) fil'trov na dielektricheskikh rezonatorakh, maloshumyashchikh SVCh usiliteley na poluprovodnikovykh priborakh. Rassmotreny sovremennye vidy modulyatsii i perspektivnye sistemy svyazi millimetrovogo diapazona voln. Kniga mozhet byt' polezna studentam i inzheneram radiotekhnicheskikh spetsial'nostey.