论文信息 - Second order Gm-C filters implementation using a new type of transconductor cell based on “multi-sinh” doublet

Second order Gm-C filters implementation using a new type of transconductor cell based on “multi-sinh” doublet

This paper presents a bipolar implementation of second order Gm-C filter using a new type of transconductor cell, based on “multi-sinh” doublets, made up of two second generation current conveyors (CCII). The advantages of the proposed structure are: (a) VLSI implementation of two types of filters — low-pass (LP) and band-pass (BP) - on the same chip; (b) different possibilities of tuning of center frequency, −3dB bandwidth, and quality factor; (c) a higher dynamic range operation. All these are due to a new type of transconductor cell based on “multi-sinh” doublets. The higher operation range is proved by large signal analysis. The simulations performed in 0.18 µm bipolar technology confirm the theoretical results.

Radu Gabriel Bozomitu | Vlad Cehan

[1] E. Sanchez-Sinencio,et al. Active filter design using operational transconductance amplifiers: A tutorial , 1985, IEEE Circuits and Devices Magazine.

[2] R. J. van de Plassche,et al. A power-efficient, low-distortion variable gain amplifier consisting of coupled differential pairs , 1997 .

[3] Hiroshi Tanimoto,et al. Realization of a 1-V active filter using a linearization technique employing plurality of emitter-coupled pairs , 1991 .

[4] Barrie Gilbert,et al. The multi-tanh principle: a tutorial overview , 1998, IEEE J. Solid State Circuits.

[5] V. Cehan,et al. A new low voltage linearization technique employing plurality of CCII coupled pairs , 2008, 2008 31st International Spring Seminar on Electronics Technology.

[6] Christofer Toumazou,et al. Analogue IC design : the current-mode approach , 1993 .