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A New Linearized CCII-Based Fully Differential CMOS Transconductor Used for \(\hbox {G}_\mathrm{m}\)-C Active Filters Implementation

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Abstract

The paper presents a new linearized, of high performance, fully differential transconductor, based on class AB second generation current conveyor (CCII) in CMOS technology. The proposed circuit is composed by two positive CCII cells connected in series and a common mode feedback loop. Unlike other CMOS circuits on the basis of CCII reported in the literature, the proposed transconductor cell allows to obtain a higher transconductance value, an improved linearity and operates at high frequency for a 3.3 V supply voltage. As an application, the new transconductor cell in CMOS technology is used for designing a 4th order differential \(\hbox {G}_\mathrm{m}\)-C low-pass filters in different approximations (Butterworth and Chebyshev) operating up to 300 MHz cut-off frequency. The simulations performed in 130 nm CMOS process confirm the theoretical results.

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  1. Faculty of Electronics, Telecommunications and Information Technology, ”Gheorghe Asachi” Technical University of Iaşi, Carol I No.11 Av., 700506,  Iasi, Romania

    Radu Gabriel Bozomitu

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  1. Radu Gabriel Bozomitu
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Correspondence to Radu Gabriel Bozomitu.

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Bozomitu, R.G. A New Linearized CCII-Based Fully Differential CMOS Transconductor Used for \(\hbox {G}_\mathrm{m}\)-C Active Filters Implementation. Wireless Pers Commun 74, 615–637 (2014). https://doi.org/10.1007/s11277-013-1310-x

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