[1] Toker A., Ozoguz S.. Insensitive current-mode universal filter using dual output current conveyors [J]. International Journal of Electronics: Theoretical & Experimental 2000, 6(6). [2] Minaei S., Turkoz S.. New current-mode current-controlled universal filter with single input and three outputs [J]. International Journal of Electronics: Theoretical & Experimental 2001, 3(3). [3] Gunes E.O., Anday F.. CFA based fully integrated nth-order lowpass filter [J]. Electronics Letters 1997, 7(7). [4] 上海无线电三厂. 信号流图法 [M]. 上海:上海人民出版社 1972. |