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H. Elwan and A. Soliman, “A Novel CMOS Current Conveyor Realization with an Electronically Tunable Current-Mode Filter Suitable for VLSI,” IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing, Vol. 43, No. 9, 1996, pp. 663-670.
http://dx.doi.org/10.1109/82.536763

has been cited by the following article:

• TITLE: A Quadrature Oscillator Based on a New “Optimized DDCC” All-Pass Filter

  AUTHORS: Achwek Ben Saied, Samir Ben Salem, Dorra Sellami Masmoudi

  KEYWORDS: Proposed Current Controlled Oscillators; CMOS 0.18 μm Process of TSMC; Current Conveyor; Differential Difference Current Conveyors

  JOURNAL NAME: Circuits and Systems, Vol.4 No.8, December 26, 2013

  ABSTRACT: In this paper, a new voltage-mode (VM), all-pass filter utilizing two second-generation current conveyors and tow differential difference current conveyors (DDCCs) is proposed. This filter uses a number of passive elements grounded capacitor. This structure of filter is used to realize a quadrature oscillator. The proposed circuits employ tow optimized differential difference translinear second generation current conveyers (DDCCII). These structures are simulated using the spice simulation in the ADS software and CMOS 0.18 μm process of TSMC technology to confirm the theory. The pole frequency can be tuned in the range of [11.6 - 39.6 MHz] by a simple variation of a DC current.