Analisis Redaman Dan Respon Frekuensi Duplexer Pada Sistem Radio Pancar Ulang UHF
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Abstract
Berdasarkan kebutuhan peningkatan jangkauan yang lebih luas pada sistem komunikasi radio, maka penggunaan stasiun pancar ulang (repeater) semakin banyak digunakan. Seringkali keterbatasan tempat menjadi faktor penghalang dalam pemasangan antena pancar dan antena penerima repeater. Oleh karena itu penggunaan duplexer akan memungkinkan stasiun pancar ulang menggunakan satu antena yang dapat bekerja sebagai antena pancar sekaligus antena terima gelombang radio. Namun demikian, selain kelebihan duplexer tersebut di atas ternyata memiliki kelemahan yaitu adanya redaman dan kemampuan isolasi sinyal pancar dan sinyal terima. Untuk itu diperlukan penelitian terhadap besar redaman kirim dan redaman terima yang ada pada sebuah duplexer guna mengoptimalkan unjuk kerja repeater.
Keywords—Duplexer, Redaman, Radio
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