CCII Kullanılarak Akım Modlu, Kesirli Dereceli Evrensel Süzgeç Tasarımı ve Gerçekleştirilmesi

Bu çalışmada, CCII kullanılarak akım modlu, kesirli dereceli, ikinci dereceden evrensel bir süzgeç tasarlanmıştır. Tasarlanan süzgeç için üç adet CCII (current conveyor, AD844A entegresi kullanılarak), üç direnç ve bir ucu topraklanmış iki adet kondansatör kullanılmıştır. Kesirli dereceli süzgeç tasarımı amacıyla geleneksel süzgeç yerine kesirli dereceyi sağlayacak paralel direnç ve kondansatörlerin seri bağlandığı Foster-I devre yapısı kullanılmıştır. Geleneksel kondansatördeki 1/sC empedans değeri, modelde 1/ s^αC değerine eşit olmaktadır (0 ≤ α ≤ 1). Bu çalışmada α =0.1, α =0.2, α =0.3, α=0.4, α=0.5, α =0.6,α =0.7, α =0.8, α =0.9 değerleri için model parametreleri hesaplanmış; (1+ α) değerine bağlı olarak derecesi 1.1, 1.2 , 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9 olan süzgeçler ikinci derece süzgeç ile karşılaştırılarak kesirli dereceli süzgeçlerin avantajları ortaya konmuştur. Önerilen devrenin performansı ve teorik analiz sonuçları PSPICE benzetimi ile doğrulanmıştır.

Anahtar Kelimeler:

Evrensel Süzgeç, , Akım Modlu Devreler, , Kesirli Dereceli Süzgeçler, Akım Taşıyıcı

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